B767 ATA 52 Student Book

DOORS CH 52

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TRAINING MANUAL FOR TRAINING PURPOSES ONLY

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ATA 52 DOORS TABLE OF CONTENTS DOORS INTRODUCTION INTRODUCTION .................................... ........................................................................ .......................................4 ...4 CREW ENTRY DOOR - INTRODUCTION INTRODUCTION ..................................................6 LATCH MECHANISM - LATCH PIN ............................................................8 CREW ENTRY DOOR - EXTERIOR HANDLE ..........................................10 DOORS - RIGID BARRIER DOOR .................................... ............................................................12 ........................12 CARGO DOORS - INTRODUCTION INTRODUCTION .........................................................14 MAIN DECK CARGO DOOR - INTRODUCTION INTRODUCTION .......................................16 MAIN DECK CARGO DOOR - COMPONENTS - OUTSIDE .....................18 MAIN DECK CARGO DOOR - COMPONENTS - INTERIOR ....................20 MAIN DECK CARGO DOOR - CONTROL SWITCHES .............................22 MAIN DECK CARGO DOOR - LOCK MECHANISM ..................................24 MAIN DECK CARGO DOOR - LATCH MECHANISM ...............................26 MAIN DECK CARGO DOOR - LATCH/HOOK LATCH/HOOK POWER UNIT ..................28 MAIN DECK CARGO DOOR - LIFT P OWER UNIT ...................................30 MAIN DECK CARGO DOOR - ROTARY ACTUATOR ..............................32 MAIN DECK CARGO DOOR - PROXIMITY SENSORS ............................34 MAIN DECK CARGO DOOR - ELECTRICAL OPERATION ......................36 MAIN DECK CARGO DOOR - FUNCTIONAL DESCRIPTION ..................38 MAIN DECK CARGO DOOR - MANUAL OPERATION .............................42 CARGO DOORS - INTRODUCTION INTRODUCTION .........................................................44 LOWER CARGO DOOR - INTRODUCTION .............................................46 LOWER CARGO DOOR - COMPONENT LOCATION - INSIDE ...............48 LOWER CARGO DOOR - LOCK HANDLE MECHANISM ........................50 LOWER CARGO DOOR - CONTROL SWITCHES ...................................52 LOWER CARGO DOOR - LATCH/HOOK LATCH/HOOK .................................. .................................................54 ...............54 LOWER CARGO DOOR - LIFT POWER UNIT ..........................................56 ..........................................56 LOWER CARGO DOOR - FUNCTIONAL DESCRIPTION DESCRIPTION ........................58 LOWER CARGO DOOR - MANUAL OPERATION ....................................60 BULK CARGO DOOR SYSTEM - INTRODUCTION ..................................62 BULK CARGO DOOR SYSTEM - COMPONENT LOCATION ...................64 ...................64 BULK CARGO DOOR SYSTEM - OPERATING MECHANISM .................66 BULK CARGO DOOR SYSTEM - OPERATION...... ..................................68 ..................................68 DOOR WARNING SYSTEM - INTRODUCTION .......................................70 DOOR WARNING SYSTEM - INDICATIONS INDICATIONS ............................................72

STUDENT NOTES:

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DOORS - INTRODUCTION General Description These are the types of doors: - Crew entry door - Cargo door. There is a door warning system that gives door status information to the flight crew. Abbreviations and and Acronyms AC ADP APU ARINC aux cm DC ECS EICA EICAS S E/E fwd gnd hdlg HZ inbd MEC outbd PDU pnl PSI PSEU pwr ref RPM V

- alternating current - air-driven pump - auxiliary power power unit - Aeronautical Radio, Radio, Inc. - auxiliary - centimeter - direct current - environmental control system - eng engin ine e ind indic icat atio ion n and and crew crew aler alerti ting ng syst system em - electrical and electronic - forward - ground - handling - hertz - inboard - main equipment center - outboard - power drive unit - panel - pounds per square inch - proximity sensor electronics unit - power - reference - revolutions per minute - volt

MAIN DECK CARGO DOOR (REF)

CREW ENTRY DOOR RIGID BARRIER DOOR

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CREW ENTRY DOOR - INTRODUCTION General Description: There is one crew entry door on the airplane which can be operated manually from inside or outside. The door opens inward and upward to a position inside the fuselage. The door is guided by rollers inside the upper and side tracks. A counterbalance above the ceiling gives the force to allow the door to be lifted to the open position. The door has these major components: - Handle mechanism - Interior handle - Secondary capture lever - Hydraulic snubber - Overcenter mechanism - Latch torque tube - Latch pin tube - Latch cam - Trolley - Side track (2)

TROLLEY

LATCH CAM

LATCH PIN CABLE

LATCH TORQUE TUBE OVERCENTER MECHANISM

SIDE TRACK (2)

SPRING HYDRAULIC SNUBBER

SECONDARY CAPTURE LEVER INTERIOR HANDLE CREW ENTRY DOOR HANDLE MECHANISM

CREW ENTRY DOOR (EXAMPLE)

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LATCH MECHANISM - LATCH PIN Purpose The latch pin lets you latch and lock the door. Physical Description The latch pin assembly has these components: - Entry door locked proximity sensor - Latch pin push-pull cable - Latch pin push-pull cable connection - Guide roller - Latch pin. Functional Description The interior handle attaches to the door handle shaft. The latch pin push-pull cable connection is part of the door handle shaft. The latch pin push-pull cable attaches to the latch pin. The latch pin moves behind the guide roller to lock it in place closed. When the latch is closed, the target for locked are near. When the latch pin is in the open position, the target for locked are far and causes door warning on the flight deck.

GUIDE ROLLER LATCH PIN PUSH-PULL CABLE

TARGET

LATCH PIN

ENTRY DOOR CLOSED PROX SENSOR

ENTRY DOOR LOCKED PROX SENSOR

DOOR OPEN (TARGETS FAR)

DOOR CLOSED & LOCKED (TARGETS NEAR)

DOOR HANDLE SHAFT LATCH PIN PUSH-PULL CABLE CONNECTION INTERIOR DOOR HANDLE

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CREW ENTRY DOOR - EXTERIOR HANDLE General The crew entry door exterior handle is located forward of the door. The exterior handle connects to the interior handle through the handle support. Pushing in the exterior primary capture lever, puts the handle in an uncaptured position. The exterior handle is lifted to unlock and unlatch the door. Physical Description The exterior door handle mechanism has these components: - Exterior handle - Primary capture lever - Capture lever finger extension - Capture system external lock - Stop bolt Door Open Operation To open the crew entry door externally, you must push the external primary capture lever fully to the uncaptured position. Slowly move the exterior handle to the unlatched position and lift the door up until the uplatch is engaged. Rotate the release roller located under the exterior handle in the required direction, then lower the handle to the faired position. Note Note::

The The ext exter erna nall pri prima mary ry capt captur ure e lev lever er stay stays s in in the the unca uncapt ptur ured ed (inboard) position.

Door Close Operation To close the crew entry door externally, make sure the interior handle is in the open (unlatched) position. Move the handle to the open position if necessary. necessary. Make sure the red external primary capture lever is in the fully captured position and the exterior handle is unlatched. If the interior handle is not open and the primary capture lever is not fully captured, you cannot close the door. Lower the crew entry door and move the exterior handle down to the faired position.

Note Note::

The The red red exte extern rnal al pri prima mary ry cap captu ture re lev lever er is is pull pulled ed int into o the the full fully y fair faired ed position when the secondary capture lever handle is moved to the captured position.

WARNING: WARNING: MAKE SURE THE AREA OF THE MOVEMENT FOR THE INTERIOR HANDLE IS CLEAR. THE INTERIOR HANDLE WILL MOVE DOWN WHEN THE DOOR IS CLOSED. THE SUDDEN MOVEMENT OF THE INTERIOR HANDLE CAN CAUSE INJURY TO PERSONS IN THE AIRPLANE.

CAPTURE SYSTEM EXTERNAL LOCK

EXTERIOR HANDLE

STOP BOLT

CAPTURE SYSTEM EXTERNAL LOCK BASE STOP BOLT

CREW ENTRY DOOR (EXTERIOR VIEW)

EXTERIOR HANDLE PRIMARY CAPTURE LEVER

FINGER EXTENSION OF CAPTURE LEVER

PRIMARY CAPTURE LEVER

FWD

INBD

(VIEW LOOKING INBOARD)

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HANDLE BOX (REF)

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DOORS - RIGID BARRIER DOOR Purpose The rigid barrier door gives access to the main deck cargo compartment from the flight deck. Location The door is located inboard of the crew entry door in the left aft corner of the flight deck. It enters the main deck cargo compartment at the forward left side that is forward of the main deck cargo loading door. Physical Description The door has two handles, one on the flight deck side and one on the main cargo compartment side. The door also has a small view window to view the main deck cargo compartment. Operation The rigid barrier door opens into the flight deck on a fixed hinge. Turn the handle clockwise to unlock the door and counter-clockwise to lock the door. The door has three latch pins. When you turn the handle clockwise the three latch pins are retracted from the rigid barrier wall.

RIGID BARRIER WALL RIGID BARRIER DOOR

RIGID BARRIER WALL

LATCH PIN RIGID BARRIER DOOR

VIEW WINDOW

LATCH PIN

PRESSURE RELIEF DOOR

RIGID BARRIER DOOR LATCH PIN (3)

RIGID BARRIER DOOR

RIGID BARRIER WALL

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CARGO DOORS - INTRODUCTION Purpose Cargo doors give access to these cargo compartments: - Main deck - Forward - Aft - Bulk. Location The main deck cargo door and bulk cargo door are on the left side. The forward and aft cargo doors are on the right side. General Description The main deck cargo door lets the crew load cargo on pallets or in containers on the main deck. The forward cargo door lets the crew load cargo on pallets or containers into the forward cargo compartment. The aft cargo door lets the crew load containerized cargo only into the aft cargo compartment. The bulk cargo door lets the crew load small, odd size cargo and animals that are not in containers or pallets.

AFT CARGO DOOR

BULK CARGO DOOR

MAIN DECK CARGO DOOR FORWARD CARGO DOOR

ELECTRICAL AND CREW ENTRY ELECTRONICS ACCESS DOOR DOOR

MAIN DECK CARGO DOOR SAFETY STRAP

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MAIN DECK CARGO DOOR -- INTRODUCTION General Description The main deck cargo door has an opening 134 inches wide and 103 inches high. The dimensions of the door let cargo handlers load and unload pallets and containers. The door is a non-plug type of door. Door latches hold the door closed against cabin pressure loads. The door opens outward and upward. It is operated electrically from the crew entry doorway. doorway. It can also be operated manually from outside the cargo compartment. Location The main deck cargo door is forward of the wing. It is on the left side of the airplane.

108 IN. 100 IN. 134 IN. 103 IN.

ROLLER LEVEL

FLOOR LEVEL

2 IN. ROLLER HEIGHT

(LOOKING FROM INSIDE)

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MAIN DECK CARGO DOOR - COMPONENTS - OUTSIDE Components on the Outside of the Door There are three manual drive sockets. The manual drive sockets are at these locations: - Lower middle (exterior side of the door) - Aft edge (exterior side of the door) - Aft of door cut out in fuselage. There are 12 witness ports along the bottom edge of the door. There are 10 component access panels. Two vent doors make sure that the fuselage is not pressurized prior to opening the door. Training Information Point The lock actuator connects to the lock and vent mechanism on the inside of the door. It is operated electrically from the P100 panel. The panel is located at the crew entry door. It is operated manually through the manual drive socket located towards the aft side of the door. The lower middle manual drive socket is fo r manual operation of the latch/hook mechanism. It connects to the latch/hook manual drive on the inside of the door. The aft manual drive socket is for manual operation of the lift hinge mechanism. It connects to the lift manual drive on the inside of the door. The witness ports let you visually make sure the door is latched and locked. The access panels give access to the failed components if the cargo door is not open.

HINGE

LIFT ARM BOLT ACCESS PANEL (2)

MID SPAN LATCH ACCESS PANEL (2) VENT DOOR (2) LATCH VIEW PORT (12) LATCH/HOOK ACTUATOR MANUAL DRIVE PORT

LIFT ACTUATOR MANUAL DRIVE PORT

LATCH/HOOK ACCESS PANEL (6)

LOCK ACTUATOR MANUAL DRIVE PORT

FWD LOCK ACTUATOR ACCESS PANEL

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MAIN DECK CARGO DOOR - COMPONENT LOCATION INTERIOR Components on the Inside of the Door The lock actuator is located on the aft side of the door. The two lift mechanisms are near the upper forward and the upper aft corners of the cargo door. The four rotary actuators are near the upper forward and upper aft corners.

Electric power shifts from the lift power unit to the latch/hook power unit when a proximity sensor senses the door is completely lowered. Torque Torque goes from the latch/hook power unit to the pull-in hooks. The pull-in hooks around the pull-in pins on the door cutout move to pull the door into the latch position. After the door is pulled pulled in, torque goes goes from the latch/hook latch/hook power unit to all all the latch cams. The cams turn around the latch pins latching the door. When a proximity sensor senses the door is latched, electric power is removed from the power unit. The lock actuator on the door interior moves to the lock position. This locks the door. The lock action causes these actions to occur:

The lift power unit is near the top center part of the cargo door. The latch/hook power unit is on the lower part of the door, near the center. The latch mechanism goes from the latch/hook power unit to the pull-in hooks, mid-span latch, and latch cams. Two pull-in hooks are at the forward and aft edges of the door. Twelve Twelve latch cams are near the bottom of the door. The lock mechanism goes from the lock actuator to the lock sectors. The lock sectors are on the twelve latch cams at the bottom of the door. The mechanism also goes to the two vent doors. The graphic does not show the location of the proximity sensors that do control functions. Their locations are shown at the component level. General Description This section describes the function of the components on the inside of the door as the door goes from the fully open position to the closed, latched, and locked position. The motor in the lift power unit supplies the torque to move the door. The torque goes through the drive shafts to the rotary actuators. The torque from the rotary actuators goes to the lift mechanism. The lift mechanism raises or lowers the door.

- Lock mechanism locks the main latch cams at the bottom of the door - Lock mechanism holds the vent doors closed.

ROTARY ACTUATOR AND LIFT ARM AND LIFT LINK

LOCK ACTUATOR

LIFT POWER DRIVE UNIT AND GEARBOX AND BRAKE ASSEMBLY ASSEMBLY

VENT DOOR TORQUE TUBE

VENT DOORS

PULL-IN HOOK

LOCK SECTOR TORQUE TUBE

LOCK SECTOR

FWD

ROTARY ACTUATOR

LIFT LINK

LIFT ARM

AFT GEARBOX AND BRAKE ASSEMBLY

TORQUE TUBE

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LIFT POWER DRIVE UNIT FWD GEARBOX AND BRAKE ASSEMBLY

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MAIN DECK CARGO DOOR - CONTROL SWITCHES Purpose Control switches let you operate the door electrically. electrically. Physical Description The open and close toggle type door control switches are spring-loaded. Functional Description The switches let you operate the door electrically. electrically. Training Information Point The lock actuator can be verified in the locked position by using the test point (TP) on the P100 panel. When the lock actuator is fully extended, the TP is connected to airplane ground. There should be low resistance between the TP and the airplane frame if the actuator is locked.

ENTRY LIGHTS (REF) LEFT FORWARD ENTRY DOOR

CARGO AREA (REF) W

GROUND SERVICE (REF)

W CARGO AREA

ENTRY

W GROUND SERVICE

LIGHTS

b

OPENED

OPEN

OPEN/CLOSE SWITCH

g

CLOSED

CLOSE

g

LATCHED

DOOR OPENED/ CLOSED/ LATCHED INDICATION

MAIN DECK CARGO DOOR CONTROL

LOCK/UNLOCK SWITCH FWD

UNLOCK

LOCK ACTUATOR EXTENDED (LOCKED) TEST POINT

b

LOCK g TP

P100 P100

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UNLOCKED

LOCKED

DOOR LOCKED/ UNLOCKED INDICATION

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MAIN DECK CARGO DOOR - LOCK MECHANISM Purpose The lock mechanism holds the large cargo door latch cams in the latched position and the vent doors closed. Physical Description The lock mechanism has these components: - Bellcranks - Torque tubes - Push rods - Vent door torque tube - Master latch lock torque tube - Lock sectors. Functional Description The lock mechanism does these things when the door lock/unlock actuator is energized to the lock position: - Transmits the movement of the lock actuator to the lock sectors - The lock sectors move to a position that will not allow the latch cams to turn. - Transmits the movement of the lock actuator to the two vent doors to keep them closed.

MID-SPAN LATCH PUSH-ROD

FWD

LOCK ACTUATOR

VENT DOORS TORQUE TUBE

MASTER LATCH LOCK TORQUE TUBE

MASTER LATCH LOCK TORQUE TUBE LOCK ACTUATOR FWD

LOCK SECTORS

LOCK ACTUATOR

DOOR LOCKED

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MAIN DECK CARGO DOOR - LATCH


MECHANISM

Purpose The latch mechanism transmits torque from the latch/hook power unit to the latch cams and pull-in hooks. Physical Description The mechanism has these components: - Torque tubes - Push rods - Bellcranks - Pull-in hooks - Mid span latch cams - Latch cams. Functional Description The torque tubes transmit torque to the latch cams. The push rods and bellcranks transmit torque from the torque tube to the pull-in hooks and the mid span latch cams.

PUSH RODS

MID SPAN LATCH (1 OF 2)

BELLCRANKS PULL-IN HOOK

LATCH CAMS (2 OF 12) FWD

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MAIN DECK CARGO DOOR - LATCH/HOOK POWER UNIT Purpose The latch/hook power unit supplies torque to these components: - Latch cams - Mid span latch cams - Pull-in hooks. Physical Description The latch/hook power unit has these components: - Latch/hook torque tube - Electromechanical actuator - Electrical power connection - Three phase 115v ac motor. Functional Description The motor supplies torque to the electromechanical electromechanical actuator. The actuator supplies torque to the latch/hook torque tube. The torque tube rotates the latch cams and then the pull-in hooks.

LATCH/HOOK TORQUE TUBES (2) MOTOR

LATCH/HOOK POWER UNIT

INBD

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MAIN DECK CARGO DOOR - LIFT POWER UNIT Purpose The lift power unit supplies power to open and close the door. Physical Description The lift power unit has these components: - Three-phase 115v ac motor - Gear box - Two drive shafts. Functional Description The electric motor supplies torque through the gearbox and two drive shafts to the two rotary actuators.

ROTARY ACTUATOR

GEARBOX AND BRAKE ASSEMBLY SEE B

ROTARY ACTUATOR SEE A LIFT ARM AND LIFT LINK

LIFT POWER DRIVE UNIT SEE B

SEE A LIFT ARM

TORQUE TUBE

LIFT LINK FWD MAIN DECK CARGO DOOR MAIN DECK CARGO DOOR (REF)

FWD

ROTARY ACTUATOR AND LIFT ARM AND LIFT LINK (EXAMPLE) FORWARD GEARBOX AND BRAKE ASSEMBLY

A AFT GEARBOX AND BRAKE ASSEMBLY

LIFT POWER DRIVE UNIT

FWD LIFT POWER DRIVE UNIT AND GEARBOX AND BRAKE ASSEMBLY B

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MAIN DECK CARGO DOOR - ROTARY ACTUATOR Purpose The four rotary actuators transmit torque from the lift power unit torque tubes to the door lift mechanisms. Physical Description The actuator has these parts: - Coupling (to the lift drive mechanism) - Three planetary gear stages (internal) - Vibration damper (internal) - No-back brake (internal). Functional Description The gears of the actuator decrease the rotation rate from the lift power unit. The coupling transmits torque into the lift mechanism. The no-back brake inside each actuator stops door movement in either direction when you remove power from the lift power unit. Training Information Point The vibration damper stops the loud vibration noise that comes from the main deck cargo door lift system when closing the cargo door. The loud vibration noise is due to a change in the manufacturing process of the rotary actuator. actuator. When closing the cargo door, a vibration starts by the alternate lock and unlock of the brake disks in the r otary actuators. This makes a vibration. The vibration is transmitted through the torque tubes and makes a loud noise. This loud noise does not mean there is damage. It does not cause bad door operation.

POWER DRIVE SHAFT

ROTARY ACTUATOR (4) LIFT ARM AND LIFT LINK

GEARBOX AND BRAKE ASSEMBLY LIFT POWER DRIVE UNIT ROTARY ACTUATOR

FWD VIBRATION DAMPER MAIN DECK CARGO DOOR

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MAIN DECK CARGO DOOR - PROXIMITY SENSORS Purpose Proximity sensors supply door and door mechanism position information to the proximity sensor electronics unit (PSEU) for door operational control and door status indications. Physical Description The sensors are electrical devices that work with metal targets. Functional Description These sensors are for door operation control: - Door up - Door latched - Door unlatched - Door locked - Door unlocked - Door closed - Door open. The door status indication sensors are door closed, door opened, door latched, door unlocked, and door locked. Each sensor has a target. The sensor senses if the target is near or far. The position information goes to the PSEU.

DOOR DOWN CONTROL SENSOR

DOOR LOCKED SENSOR DOOR UNLOCKED SENSOR

DOOR DOWN STOP

DOOR LATCHED SENSOR DOOR UNLATCHED SENSOR

LIFT ARM

DOOR LOCK ENABLE SENSOR DOOR OPEN CONTROL SENSOR DOOR CLOSED SENSOR DOOR LOCK ENABLE SENSOR DOOR CLOSED SENSOR

DOOR UP STOP LIFT ARM

LATCH/HOOK TORQUE TUBE VENT DOOR

DOOR LOCKED CONTROL SENSOR

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MAIN DECK CARGO DOOR - ELECTRICAL OPERATION

Close and Latch Operation

General The large cargo door uses power from the ground handling bus for electric operation.

WARNING: WARNING: DO NOT OPERATE THE DOOR IN WINDS MORE THAN 40 KNOTS. DO NOT LET THE DOOR STAY OPEN IN WINDS MORE THAN 65 KNOTS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR. WARNING: DO NOT OPEN THE DOOR WHEN THE AIRPLANE IS PRESSURIZED. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR . Controls

The main deck cargo door control switch is on the P100 panel. Displays and Indications Indication lights on the P100 main cargo door control panel supply door operation information. Witness ports on the door let you see the position of the latch cams and lock sectors. Unlock Operation Move the LOCK switch to unlock the cargo door. If the vent door opens, the cargo door is unlocked. The door closed light on the P100 panel is on. Cargo door electric operation is enabled. Unlatch and Open Operation To unlatch the door, move the OPEN switch to the open position. Continue to hold the cargo door control switch in the open position. The door moves to the full up position. When it stops, the blue door open light on the P100 panel comes on.

Move the CLOSE switch to the closed position. The blue door open light on the P100 panel goes off when the door leaves the full up position. Continue to hold the switch in the closed position. The door goes to full down position. Then it latches and the door closed light on the P100 panel comes on. Lock Operation Hold the LOCK switch to the lock position. Make sure that the vent doors close. The door is locked if the vent doors are closed and the green locked light on the P100 panel is on.

115V AC GND HDLG BUS MAIN CARGO DR LOCK CB

B MAIN CARGO DR UNLOCKED

P34 APU/EXT PWR PNL

UNLOCK

LATCHED UNLOCKED

UNLOCKED

NOT LATCHED S898 MAIN CARGO DOOR LOCK ENABEL SWITCH

MAIN CARGO DOOR LOCK

THERMAL PROTECTOR

TP P100 MAIN CARGO DOOR CONTROL PANEL

LOCK ACTUATOR

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BRAKE

LOCKED

LOCK

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MOTOR


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MAIN DECK CARGO DOOR - FUNCTIONAL DESCRIPTION General The main deck cargo door is operated electrically with the unlock/lock switch and the open/close switch on the P100 panel. The P100 panel is located in the crew entry doorway. Indicator lights provide status information to the door operator. When the door is fully open or closed, proximity sensors remove power from the actuators. Opening Electrical Operation Here is the list of events that open the main cargo door when it is closed, latched, and locked: When the door is closed, latched, and locked, the three green CLOSED, LATCHED, LATCHED, and LOCKED lights will be on and the two blue OPENED and UNLOCKED lights will be off (P100). When the UNLOCK/LOCK switch is moved to the UNLOCK position, 115vac is supplied to the lock actuator through the lock enable sensor. The lock actuator retracts which turns the lock torque tube. Rotation of the lock torque tube turns the twelve lock sectors freeing the latch cams for rotation. As the lock sector moves away from the door locked warning sensor, the MAIN CARGO DOOR caution level message will appear on EICAS. Linkage from the lock torque tube turns the vent door torque tube opening the vent doors and relieving compartment pressure before the door is opened. As the aft vent door moves away from the fully closed position, the door locked control sensor causes the door LOCKED light to turn off. When the lock sectors are fully retracted, the unlatch control sensor and the door unlocked control sensor provide control power to the latch/hook power drive unit through the energized latch relay circuit. When the OPEN/CLOSE switch is moved to the OPEN position, 115vac is supplied to the latch/hook power drive unit through the energized latch relay. The latch/hook power drive unit turns to rotate the latch/hook torque tubes. When the torque tube turns away from the latched position, the latched control

sensor opens. The latched control sensor, the door down control sensor, and the door unlocked control sensor continue to energize the latch relay. relay. The relay stays energized until the latch/hook torque tube moves to the unlatched position and the door down control sensor indicates the door is not down. Because the latch relay stays energized until the door unlatches and moves from the down position, you can reverse the latch operation of the door at any point thereafter. When the latch mechanism rotates from the latched position, the lock enable control sensor will toggle and prevent power to the lock actuator. As the pull-in hooks rotate from the latched position, the door will move outboard and open the door closed control and warning sensors. The door latched control sensor will also open. The open door closed sensor will cause the door CLOSED light to go off (P100). The open door latched sensor will cause the door LATCHED light to go off (P100). When the latch mechanism reaches the unlatched position, the unlatch sensor closes. The closed unlatched control sensor de-energizes the unlatch side of the latch relay. The closed unlatch sensor and the open door control sensor energize the hinge up relay, providing 115vac power to the lift power drive unit. The door down sensor opens as the lift arms of the rotary actuators move away from the door down control sensor. sensor. The open door down sensor de-energizes the latch side of the latch relay and removes power from the latch/hook actuator. The open door down sensor and the closed unlatched sensor energize the hinge down relay and enable door operation to be reversed. During the door opening cycle, the brake unit of the gearbox and brake assembly ratchets freely, offering no resistance to door movement. When the door reaches the full up position, the door open sensor closes to remove power from the lift power drive unit. The closed door open sensor also turns on the door OPEN light (P100). The hinge down relay stays energized as long as the door is not down and is unlatched. This allows you to close the door at any point during the opening operation. Note Note::

If one one rota rotary ry act actua uato torr arm arm lea leads ds the the oth other er as the the doo doorr ope opens ns,, the the leading arm will contact its upstop. Slip clutches in the power unit will allow the lagging arm to contiue to drive until its sensor shuts off power to the power unit.

115V AC GND HDLG BUS

fa fb fc

fa fb fc

MAIN CARGO 28V DC DOOR GND HDLG BUS CARGO DOOR CONT P34 APU/EXT PWR RED BLU S879 MAIN CARGO DOOR DOWN

HINGE PDU LOWER ENABLE HINGE PDU RAISE ENABLE

RED BLU S882 MAIN CARGO DOOR UNLATCH

MAIN CARGO DOOR HINGE DOWN

28V DC

OPEN (OFF)

DOOR OPEN RED BLU

B OPENED

S881 MAIN CARGO DOOR OPEN

CLOSE P100

OPENED CLOSED LATCHED

MAIN DECK CARGO DOOR CONTROL UNLOCK

UNLOCKED

(OFF) LOCK

RED BLU

DOOR LATCHED

S883 MAIN CARGO DOOR UNLOCK

LOCKED

MAIN CARGO DOOR HINGE UP

G LATCHED

RED BLU S884 MAIN CARGO DOOR LATCHED

DOOR CLOSED

G OPEN OFF CLOSE G MAIN CARGO LOCKED DOOR - CONTROL P100 MAIN CARGO DOOR CONT PNL

fa

CLOSED

DOOR LOCKED RED BLU

S895 MAIN CARGO DOOR CLOSED RED BLU S896 MAIN CARGO DOOR LOCKED

LATCH PDU UNLATCH ENABLE LATCH PDU LATCH ENABLE

fb

BRAKE

fc

BRAKE

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BRAKE MAIN CARGO DOOR LATCH

PROXIMITY SWITCH ELECTRONICS UNIT

MAIN DECK CARGO DOOR - FUNCTIONAL DESCRIPTION B767-3S2F B767-3S2 F



LATCH/HOOK ACTUATOR

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MAIN DECK CARGO DOOR - FUNCTIONAL DESCRIPTION (CONT’D) Closing Electrical Operation Beginning with the main deck cargo door fully open, here is the list of events to close the door: When the control switch is placed in the CLOSE position, power is provided through the energized hinge down control relay to the lift power drive unit to close the door. As the door moves away from the full up position, the door up sensor opens to energize the hinge up control relay. This will permit door operation to be reversed at any time. The door OPEN light (P100) will go off when the door open sensor opens. During the door closing cycle, the pawls of the gearbox and brake assemblies engage ratchet teeth on the brake housing to prevent rotation. This forces the lift power drive unit to drive against slipping brake disks to close to door. This equalizes the power required to open and close the door, and ensures that the door will remain in position if power is lost or a failure occurs. When the pull-in hooks contact the hook pins on door closing, door movement is stopped, but the lift power drive unit contiues to operate until the door down sensor closes. This energizes the latch side of the latch relay. Overtravel of the lift mechanism is provided by slip-joints in the lift links. After door movement is stopped, rotation of the rotary actuator lift arm causes the lift links to extend at the lift slip joints. If the latch cams are not in the fully open position as the door closes, flanges on the mid-span latch cams contact the latch pins and hold the door open to prevent engagement of the hooks with the hook pins. The lift mechanism will continue to operate because of the slip-joint in the rotary actuator lift links, and the hooks will rotate to the closed position even though the hooks do not engage the pull-inhook pins. The closed door down sensor will remove power from the lift power drive at the de-energized hinge down relay. relay. Power is supplied to the latch/hook actuator through the latch relay. The latch/hook actuator will turn the latch hook torque tube, which then turns the pull-in hooks to pull the door flush with the fuselage. As the latch/hook torque torque tube rotates from from the unlatched position, position, the unlatch side of the latch relay energizes to permit door operation to be reversed at any

time. As the pull-in hooks close the door, the lift links are compressed at the slip joint to a point within within the limits limits of slip to unload unload the link. As the hooks hooks pull the door to the fully closed position, the main latch cams and mid-span latch cams turn to engage the latch pins and latch cams to hold the door closed. When the door is flush with the fuselage, the door closed sensor is closed and the door CLOSED light on the P100 will come on. When the latch/hook torque tube turns to the latched position, the latch side of of the latch relay is de-energized and power is removed from the latch/hook actuator. actuator. The lock enable control sensor is also closed to allow power to the lock actuator when the UNLOCK/LOCK switch is moved to the LOCK position. The closed door latched sensor will send a signal to turn the door LATCHED light on (P100). When the UNLOCK/LOCK switch is moved to the LOCK position, the lock sectors extend to block the latch cams to lock them closed. As the lock sectors extend, the door unlock sensor opens to prevent electrical unlatching and opening of the door. When the vent doors turn and close to the fully closed position, the door locked sensor closes to turn on the door LOCKED light on the P100. The door warning system gets signals from the door closed, the door latched, and the door locked sensors. When the door is closed, latched, and locked, the MAIN CARGO DOOR caution message does not show on EICAS.

115V AC GND HDLG BUS

fa fb fc

fa fb fc

MAIN CARGO 28V DC DOOR GND HDLG BUS CARGO DOOR CONT P34 APU/EXT PWR

HINGE PDU LOWER ENABLE

RED BLU S879 MAIN CARGO DOOR DOWN

HINGE PDU RAISE ENABLE RED BLU

28V DC

S882 MAIN CARGO DOOR UNLATCH

OPEN (OFF)

DOOR OPEN

B

RED BLU

OPENED

S881 MAIN CARGO DOOR OPEN

OPENED CLOSED

CLOSE LATCHED

P100

MAIN DECK CARGO DOOR CONTROL UNLOCK

UNLOCKED

(OFF) LOCK

RED BLU

DOOR LATCHED

S883 MAIN CARGO DOOR UNLOCK

LOCKED

MAIN CARGO DOOR HINGE UP

S884 MAIN CARGO DOOR LATCHED

G G OPEN OFF CLOSE G MAIN CARGO LOCKED DOOR - CONTROL P100 MAIN CARGO DOOR CONT PNL

fa

CLOSED

DOOR LOCKED RED BLU

LATCH PDU UNLATCH ENABLE LATCH PDU LATCH ENABLE

S895 MAIN CARGO DOOR CLOSED RED BLU

fb

BRAKE

fc

BRAKE BRAKE MAIN CARGO DOOR LATCH

PROXIMITY SWITCH ELECTRONICS UNIT

MAIN DECK CARGO DOOR - FUNCTIONAL DESCRIPTION (CONT’D) B767-3S2F B767-3S2 F Page - 41

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LATCHED DOOR CLOSED

RED BLU

S896 MAIN CARGO DOOR LOCKED

MAIN CARGO DOOR HINGE DOWN

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LATCH/HOOK ACTUATOR

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MAIN DECK CARGO DOOR - MANUAL OPERATION General Use a 3/8-inch drive tool for manual door operations.

WARNING: DO NOT OPERATE THE DOOR IN WINDS MORE THAN 40 KNOTS. DO NOT LET THE DOOR STAY OPEN IN WINDS MORE THAN 65 KNOTS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.

WARNING: DO NOT OPEN THE DOOR WHEN THE AIRPLANE IS PRESSURIZED. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.

Lift and Lower Operation CAUTION: CAUTION: CAUTION: CAUTION: DO NOT NOT LET THE POWER POWER DRIVE DRIVE UNIT OPERAT OPERATE E WITH TORQUE LIMITER SLIPPAGE FOR MORE THAN 5 SECONDS. DAMAGE TO THE POWER DRIVE UNIT CAN OCCUR. DO NOT OPERATE MANUAL DRIVE AT A SPEED FASTER THAN 500 RPM OR A TORQUE MORE THAN 190 POUND-INCHES. Insert the drive tool into the lift manual drive socket aft of the door. Rotate counterclockwise counterclockwise until the door is in the full up position, 1280 full turns. Note Note::

A pau pause se at the the low low poin pointt of of doo doorr tra trave vell is is nor norma mal. l.

Reverse the operations to lower the door.

Controls

Latch and Lock Operation

The manual system has three manual drive sockets. The first is the unlock actuator drive socket at the aft edge of the door. The second is the latch actuator drive socket at the bottom middle of the door. The third is the lift mechanism drive socket located just aft of the door in the fuselage.

Insert the drive tool in the latch manual drive socket. Turn it in the latch direction. The door will latch.

CAUTION: CAUTION:

The door must be unlatched before you lift the door with the lift manual drive socket.

LIMIT MANUAL MANUAL DRIVE DRIVE INPUT INPUT TORQUE TORQUE TO LATCH LATCH/HOO /HOOK K ACTUATOR ACTUATOR TO 130 POUND-INCHES. POUND-INCHES. LIMIT POWER TOOL TOOL SPEED TO 500 RPM OR LESS. WHEN MANUALLY OPERATING POWER UNIT, STOP CONTACT IS FELT BY A SUDDEN TORQUE RISE WHICH IS NOT TO EXCEED 130 POUNDINCHES. IF ACTUATOR CLUTCH SLIPPAGE TIME EXCEEDS 5 SECONDS, DAMAGE TO SLIP CLUTCH MAY OCCUR.

Indications Witness ports along the bottom edge of the door are used to see if the door is latched and locked. Unlock and Unlatch Operations Manually turn the lock actuator. actuator. If the vent doors open, the door is unlocked. Insert the drive tool into the latch manual drive socket. Turn clockwise 115 turns. The door is unlatched when it moves outboard to where it can move freely a small distance inboard and outboard.

Note Note::

The The low lower er edge edge of the the doo doorr sho shoul uld d mov move e abo about ut 3 inc inche hes s out outbo boar ard. d.

Training Information Point

The door must be full down before you can latch the door with the latch manual drive socket.

LOCK ACTUATOR

FWD MAIN DECK CARGO DOOR LATCH/HOOK ACTUATOR

FWD MAIN DECK CARGO DOOR

LIFT MANUAL DRIVE GEARBOX

FWD LIFT MANUAL DRIVE GEARBOX

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CARGO DOORS - INTRODUCTION Purpose Cargo doors give access to the main deck, forward, aft, and bulk lower lobe cargo compartments. compartments. Location The forward and aft lower cargo doors are on the right side. The main deck cargo door and bulk cargo door are on the left side. General Description The aft cargo door lets the crew load cargo containers only. The bulk cargo door lets the crew load small, odd size cargo and animals that are not in containers or on pallets.


AFT CARGO DOOR

BULK CARGO DOOR

MAIN DECK CARGO DOOR FORWARD CARGO DOOR

ELECTRICAL AND CREW ENTRY ELECTRONICS ACCESS DOOR DOOR


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LOWER CARGO DOOR - INTRODUCTION General Description The large cargo door has an opening of 134 inches wide, and 69 inches high. The dimensions of the door lets cargo handlers load and unload pallets and containers. The door a is non-plug type of door. Door latches hold the door closed against cabin pressure loads. The door opens outward and upward. You can operate it electrically from outside or inside the cargo compartment. You can operate it manually from outside the cargo compartment. Location The large cargo doors are forward and aft of the wing on the right side of the airplane.

FWD

(LOOKING FROM INSIDE)

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LOWER CARGO DOOR - COMPONENT LOCATION - INSIDE Components on the Inside of the Door The two lift mechanisms are near the upper forward and the upper aft corners of the cargo door. The two rotary actuators are near the upper forward and upper aft corners. The lift power unit is near the top forward part of the cargo door. The latch/hook power unit is on the lower part of the door, near the center. The latch mechanism goes from the latch/hook power unit to the pull-in hooks and latch cams. Two pull-in hooks are at the forward and aft edges of the door. Twelve Twelve latch cams are near the bottom of the door. The lock mechanism goes from the latch/lock handle to the lock sectors on the twelve latch cams at the bottom of the door. The mechanism also goes to the two vent doors. The latch/lock handle is forward of the door in the fuselage. The graphic does not the show the location of the proximity sensors that do control functions. Their locations are shown at the component level. General Description This section describes the function of the components on the inside of the door as the door goes from the fully open position to the closed, latched, and locked position. The motor in the lift power unit supplies the torque to move the door. The torque goes through the drive shafts to the rotary actuators. The torque goes from the rotary actuators to the lift mechanism. The lift mechanism raises or lowers the door.

Electric power shifts from the lift power unit to the latch/hook power unit when a proximity sensor senses the door completely lowered. Torque goes from the latch/hook power unit to the pull-in hooks. Movement of the pull-in hooks around the pull-in pins on the door cutout pulls the door into the latch position. After the door is pulled pulled in, torque goes goes from the latch/hook latch/hook power unit to all all the latch cams. The cams turn around the latch pins. This latches the door. When a proximity sensor senses the door latches, it removes electric power from the power unit. Movement of the latch/lock handle on the fuselage to the lock position, locks the door. The lock action causes these actions to occur: - Lock mechanism locks the main latch cams at the bottom of the door - Lock mechanism holds the vent doors closed.

ROTARY ACTUATORS LIFT POWER UNIT

DRIVE SHAFT ROTARY (2) ACTUATORS

ROTARY ACTUATOR

VENT DOORS (2)

FWD

MIDSPAN LATCHES (2) INBD LATCH CAMS (12)

LATCH/HOOK POWER UNIT PULL-IN HOOKS (2)

AFT HINGE ARM

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LOWER CARGO DOOR - LOCK HANDLE MECHANISM Purpose The lock handle controls the movement of the lock mechanism. Physical Description The lock handle mechanism has these components: - Handle release button - Handle - Spring (internal) - Connection to lock mechanism. Functional Description A push on the release release button releases releases the lock handle. handle. The connections to the lock mechanism transmits transmits the movement to the lock sectors and the vent doors.

134"

68" VENT DOORS

HANDLE RELEASE BUTTON FWD CARGO DOOR

LOCK HANDLE

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LOWER CARGO DOOR - CONTROL SWITCHES Purpose Control switches let you operate the door electrically. electrically. Physical Description The open and close toggle type door control switches are spring-loaded. Functional Description The switch lets you operate the door electrically, electrically, after the door is unlocked.


LD-2

FWD

CL

CARGO COMPARTMENT LIGHTS

CARGO DOOR CONTROL

DOOR OPEN

OPEN

CLOSE

P43

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DOOR CLOSE

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LOWER CARGO DOOR - LATCH/HOOK

Functional Description

Latch/hook Power Unit

The torque tubes transmit torque to the latch cams. The push rods and bellcranks transmit torque from the torque tube to the pull-in hooks and the mid span latch cams.

The latch/hook power unit supplies torque to these components: - Latch cams - Mid span latch cams - Pull-in hooks. Physical Description The latch/hook power unit has these components: - Latch/hook torque tube - Electromechanical actuator - Electrical power connection - Three phase 115v ac motor. Functional Description The motor supplies torque to the electromechanical electromechanical actuator. The actuator supplies torque to the latch/hook torque tube. The torque tube rotates the latch cams and then the pull-in hooks. Latch Mechanism The latch mechanism transmits torque from the latch/hook power unit to the latch cams and pull-in hooks. Physical Description The mechanism has these components: - Torque tubes - Push rods - Bellcranks - Pull-in hooks - Mid span latch cams - Latch cams.

LATCH/HOOK TORQUE TUBES (2)

MID SPAN LATCH (1 OF 2)

MOTOR

LATCH/HOOK POWER UNIT

PUSH RODS

BELLCRANKS PULL-IN HOOK

LATCH/HOOK TORQUE TUBE

LATCH CAMS (2 OF 12)

FWD

INBD

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LOWER CARGO DOOR - LIFT POWER UNIT Purpose The lift power unit supplies the power to open and close the door. Physical Description The lift power unit has these components: - Three-phase 115v ac motor - Gear box - Two drive shafts. Functional Description The electric motor supplies torque through the gearbox and two drive shafts to two rotary actuators.


FWD

GEARBOX

INBD

MOTOR

DRIVE SHAFTS (2)

ROTORY ACTUATORS (2) (REF)

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LOWER CARGO DOOR - FUNCTIONAL DESCRIPTION General Sensors on the door give inputs to the proximity sensors electronics unit (PSEU). The PSEU uses the inputs to turn on the door position indication lights, on the p43 panel, and enable door control relays. The relays supply three-phase power to the power units on the door. The phase configuration controls whether the power unit opens or closes the door. Unlock and Unlatch A full open door lock lock handle enables enables door operation. The PSEU uses inputs from the handle unlocked sensor, the door latch range, and door unlatched sensor to enable the door latch relay. The relay configures the power phases to unlatch the door. Lift Movement The PSEU uses input from the door unlatched sensor and door open sensor to enable the hinge up relay. The relay configures the power phases so the lift power unit moves the door up. The PSEU uses input from the door up relay to turn on the door open light, on the p43 panel, and enable the cargo handling system. Lower Movement The PSEU uses input from these components: - Door unlatch sensor - Door latch range - Door handle open sensors.

These components enable the hinge down relay. The relay configures the power phases so the lift power unit lowers the door.

The PSEU uses input from the door open sensor to turn off the door open light, on the p43 panel. The PSEU uses input from the latch range sensor to open the hinge down relay. Latch and Lock The PSEU uses input from these components: - Latch range sensor - Door handle open sensor - Door latched sensor. These components enable the door latch relay. The relay configures the power phases so the latch power unit pulls in and latches the door. The PSEU uses inputs from the door handle open sensor and the door latched sensor to open the door latch relay. The PSEU uses inputs from the door handle open sensor and the door unlatched sensor to turn on the door closed light, on the p43 panel.

115V AC GND HDLG BUS FWD CARGO DOOR 28V DC GND HDLG BUS CARGO DR CONTROL

DR HINGE DN

A

B

HINGE PDU DR HINGE UP

P34 PANEL

S152 DR LATCH RANGE

B

LATCH ACTR

DR LATCH (P35) DR UNLATCH (P35)

S150 DR UNLATCH

A

S151 DR OPEN

CARGO HDLG PWR ENABLE

W DR OPEN

S153 DR HANDLE UNLK

OPEN OFF CLOSE

W DR CLOSED

S154 DR LATCHED

DOOR OPEN PROX SW ELEC UNIT (PSEU)

DR CONT ARM P43 EXT FWD CARGO DR CONT

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LOWER CARGO DOOR - MANUAL OPERATION

Lift and Lower Operation

General

CAUTION: CAUTION: DO NOT NOT LET THE POWER POWER DRIVE DRIVE UNIT UNIT OPERATE OPERATE WITH TORQUE LIMITER SLIPPAGE FOR MORE THAN 5 SECONDS. DAMAGE TO THE POWER DRIVE UNIT CAN OCCUR. DO NOT OPERATE MANUAL DRIVE AT A SPEED FASTER THAN 500 PM OR A TORQUE MORE THAN 190 POUND-INCHES.

Use a 3/8-inch drive tool for manual door operations.

WARNING: DO NOT OPERATE THE DOOR IN WINDS MORE THAN 40 KNOTS. DO NOT LET THE DOOR STAY OPEN IN WINDS MORE THAN 65 KNOTS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR. WARNING: DO NOT OPEN THE DOOR WHEN THE AIRPLANE IS PRESSURIZED. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.

Insert the drive tool into the lift manual drive socket on the door outer skin. Rotate counterclockwise counterclockwise until the lower part of the door rotates away from the lower sill 6 feet. When the door is opened sufficiently, sufficiently, move the drive tool to the lift manual drive socket on the forward edge of the door. Again, rotate the drive tool counterclockwise counterclockwise until the door is in the full up position, 1280 full turns.

Controls A pause at the low low point of door travel travel is normal. There are three manual drive sockets on the door. One for the latch lock at the bottom middle of the door. Two lift sockets at the upper forward part of the door. CAUTION: CAUTION: CAUTION: CAUTION: LIMIT LIMIT MANUAL MANUAL DRIVE INPUT INPUT TORQUE TORQUE TO LATCH/ LATCH/ HOOK ACTUATOR TO 130 POUND-INCHES. LIMIT POWER TOOL SPEED TO 500 RPM OR LESS. WHEN MANUALLY OPERATING POWER UNIT, STOP CONTACT IS FELT BY A SUDDEN TORQUE RISE WHICH IS NOT TO EXCEED 130 POUND-INCHES. ACTUATOR CLUTCH SLIPPAGE TIME SHOULD NOT EXCEED 5 SECONDS, DAMAGE TO SLIP CLUTCH MAY OCCUR. Indications Witness ports along the bottom edge of the door let you see if the door is latched and locked. Unlock and Unlatch Operations Release the latch lock handle. If the vent doors open, the door is unlocked. Insert the drive tool into the latch/lock manual drive socket. Turn it in the clockwise direction, 115 115 turns. The door unlatches when it moves outboard to where it can move freely a small distance inboard and outboard. Note Note::

The The low lower er edge edge of the the doo doorr sho shoul uld d mov move e 3 inch inches es outb outboa oard rd..

Reverse the operations to lower the door. Latch and Lock Operation Insert the drive tool in the latch manual drive socket. Turn it in the latch direction. The door latches. Training Information Point The door must be unlatched before you lift the door with the lift manual drive socket. The door must be full down before you can latch the door with the latch manual drive socket.

OUTER SKIN LIFT MANUAL DRIVE SOCKET

FLOOR BEAM LIFT MANUAL DRIVE SOCKET

FORWARD DOOR SILL

DRIVE ARM LINK ARM

LATCH/HOOK MANUAL DRIVE SOCKET FORWARD LARGE CARGO DOOR

FWD

LATCH LOCK CONTROL HANDLE

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BULK CARGO DOOR SYSTEM - INTRODUCTION Purpose The bulk cargo door system gives access to the bulk cargo compartment. Location The bulk cargo door is on the left side of the airplane, aft of the aft cargo door. General Description The bulk cargo door has a clear opening 38 inches wide and 45 inches high. Door dimensions let cargo handlers load and unload cargo that is not on pallets or in containers. The door is a plug type. To open, it hinges along the top and moves into the bulk cargo compartment area. You can operate it manually from the outside or inside the bulk cargo compartment.

DOOR CABLE

BULK CARGO

DOOR OPEN STRAP LOOP UPLOCK

HANDLE DOOR CLOSED

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INTERIOR DOOR HANDLE

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BULK CARGO DOOR SYSTEM - COMPONENT LOCATION Component Locations The operating mechanism is on the cargo compartment ceiling structure, inboard of the bulk cargo door. The snubber is at the top, center of the cargo door. The two hinge arms are at the top of the cargo door. The latch mechanism is across the door, near the bottom. General Description The latch mechanism lets you open and close the door. It also holds the door closed. The hinge arms let the door rotate open and closed. The counterbalance helps helps to lift the door open. The snubber controls the rate of movement of the door.

SNUBBER

DOOR CABLE

DIFFERENTIAL PULLEY SPRING CABLE

HINGE ARM

SPRING TUBE

DOOR STOPS (12) INTERIOR DOOR HANDLE LATCH TORQUE TUBE

DOOR CENTERING ROLLER (2)

LATCH CAM LOWER STOPS (2)

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BULK CARGO DOOR SYSTEM - OPERATING MECHANISM Purpose The operating mechanism lifts the bulk cargo door to the open position. The operating mechanism has these components: - Spring tube - Spring cable - Differential pulley - Door cable. Location The operating mechanism attaches to airplane structure at the top of the bulk cargo compartment. Functional Description The springs in the tube supply the force that assists in opening the door. The differential pulley keeps the force near constant as the door travels upward.

SNUBBER

DOOR CABLE DIFFERENTIAL PULLEY SPRING CABLE

SPRING TUBE DOOR OPEN STRAP LOOP UPLOCK

INTERIOR HANDLE HANDLES

FWD EXTERIOR HANDLE

LEFT SIDE

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BULK CARGO DOOR SYSTEM - OPERATION Operation - Door Open You can use either the internal or external handle to unlatch the door. To use the external handle, pull the handle outboard until you can turn it. To use the internal handle, it is only necessary to turn it. When the door is unlatched, the operating mechanism supplies the force to open the door. The snubber controls the rate at which the door opens. The door rotates inward and upward on the hinge arms. When the door is fully open, put the hold-open strap around the lower, aft door stop. Operation - Door Close To close the door, release the hold-open strap. Pull or push the door down. Turn the handle to the unlatch position to ensure the latch cams are in the proper position. Close the door. Turn the handle to the latch position. The door is latched and locked. If you use the external handle, make sure the handle goes inboard to the fair position when you close the door.

BULK CARGO

INTERIOR HANDLE

DOOR OPEN STRAP LOOP UPLOCK

HANDLE EXTERIOR HANDLE LATCH CAM

FWD LEFT SIDE

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DOOR WARNING SYSTEM - INTRODUCTION Purpose The door warning system supplies door status information. Location Sensors supply status information on these doors: - Crew entry - Forward access - MEC access - Main deck cargo - Forward cargo - Aft cargo - Bulk cargo. The sensors are electronic devices that work with targets.


RIGID BARRIER DOOR

AFT CARGO DOOR

BULK CARGO DOOR MAIN DECK CARGO DOOR FORWARD CARGO DOOR

CREW ENTRY DOOR

ELECTRICAL AND ELECTRONICS ACCESS DOOR


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DOOR WARNING SYSTEM - INDICATIONS General The EICAS display (on P2) and the annunciator panel (on P5) show door indications. EICAS Display Advisory and caution caution information shows shows on the EICAS display display.. Advisory or caution caution messages show show for each door that that is not in the closed closed and locked position. The large cargo doors have a caution message. The other doors have advisory messages. A single message shows when only one door of that type and location is not closed or locked. If two or more doors of that type are not closed or locked, the EICAS message changes to the type of door. The door annunciator panel has these three groups: - Entry doors - Cargo doors - Access doors. Any door not closed closed or not locked causes causes the annunciator annunciator light to come on. on.

DOOR SENSORS

PSEU

EICAS CMPTRS

ENTRY DOORS

CARGO DOORS

ANNUNCIATOR PANEL (P5)

MAIN CARGO DOOR (B) FWD CARGO DOOR (B) AFT CARGO DOOR (B) BULK CARGO DOOR

CREW ENTRY FWD ACCESS DOOR E/E ACCESS DOOR

CARGO DOORS C

ENTRY DOORS C

ACCESS DOORS DOORS C

EICAS MESSAGES (P2)

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ACCESS DOORS

B767 ATA 52 Student Book

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