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NAV tRAINING gUIDE PROMETEUSFull description
It is a compilation of questions and answers (viva) on navigation watchkeeping for helping students in their orals examinations
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WeOne question Bank for General Navigation.
You can update NAV NAV database database using a set of floppy disks containing the NAV database . You will also need to use MCDU MCDU , , MDDU MDDU , , DLS DLS and and CB CBs s In case you need to make NAV database database update or any other t ype of t ask on an aircraft you shou ld refer to its manufacturers' certifi ed updated manuals.
Step 1: Preparation and Notation
Lets see some things that can make our process easy. MDDU ( Mult Disk Data Unit ) -------- > Floppy Disk reader. DLS ( Data Loading Selector ) -------- > Used to route software from MDDU to specific selected computer. CB Circuit Breaker -------- > Used to disconnect electric power supply from specific computer for isolation and reset. MCDU ( Multifunction Control Display Unit ) -------- > The two small screens a nd keyboards on the central pedestal.
Step 2: Start
- Pull FMGC 1 CB and FMGC 2 CB - Set DLS ON/OFF Switch to ON - Press NEXT Switch on DLS until you get FMGC 1 on LCD - Press SELECT CTL Switch on DLS to select FMGC 1 - Put Disk 1 into the MDDU - Put FMGC 1 CB to ON You find that the LCD on the MDDU has the message Transfer in Progress
Step 3: Disk s to Go
As the Disk 1 finishes loading , the message " Eject Disk " appears and message " Insert Disk 2 " appears. Now , you can eject Disk 1 and Insert Disk labeled 2 . The process is repeated for Disk 2 , Disk 3 and Disk 4 . Then you see the message " Transfer Complete " indicating that the NAV Database has been successfully loaded for FMGC 1. Now on the Data Loading Selector , press Next until you get FMGC 1 on the LCD , then press SEL CTL to deselect FMGC 1 . Then put DLS ON/OFF switch to OFF position.
Then we want to verify that FMGC 1 has been uploaded with new NAV database.
Reset FMGC 1 by pulling FMGC 1 CB for 10 seconds then push it back. On MCDU 1 press the button DATA . Then press the Line Select Key ( LSK ) adjacent to < A/C STATUS . Then you get the page that views the old ( ACTIVE ) NAV Database and the new ( SECOND ) NAV Database . You can see that the new NAV Database has been uploaded successfully.
Step 4: Cross Load FMGC 2
Here , we will cross-load NAV Database from FMGC 1 to FMGC 2 from computers directly without using any disks. First , push FMGC 2 Circ uit Breaker ( CB ) to activate FMGC 2 . Then , on MCDU 1 , press DATA button , Line Select Key ( LSK ) adjacent to STSUS/XLOAD > , NOTES
- Make sure that on the top right of the page you see 3/7 , this means that this is the third page of the software pages of the FMGC . The third page is the NAV database . This is important because you don't want to cross-load the entire software pages of FMGC 1 to FMGC 2 , but you want to cross-load the NAV database page only ( the third page ).
- Make sure that you see the phrase XLOA D FM1 TO FM2 . This is very important because you want to cross-load NAV database page from FMGC 1 to FMGC 2 not the opposite. Be Careful. Line Select Key ( LSK ) adjacent to START , Line Select Key ( LSK ) adjacent to * CONFIRM The cross-load process starts and takes only about 3:20 minutes. Then you see the phrase FM1/FM2 IDENTICAL . Now you want to reset FMGC 1 and FMGC 2 by pulling FMGC 1 CB and FMGC 2 CB for 10 seconds then pushing them . Now you have successfully uploaded FMGC 1 with NAV database and cross-loaded FMGC 2 from FMGC 1. Don't forget to sign off the aircraft Technical Log Boo k ( TLB ).
