Mode Reversions

1

WHY MODE REVERSIONS ?

Mode reversions are inherent to the . The necessary design of automation behavior i vario s ar i al circ sta ces

2

MODES

LATERAL

3

LATERAL NAV to HDG discontinuity

BBB

Click

AAA

Click c

FROM

 AAA

UTC

SPD/ALT

1210

280/FL130

- - - - - - F-PLN DISCONTINUITY - - - - - - CCC

1219

LAT - DISCONT

4

280/FL130

AHEAD

LATERAL NAV to HDG discontinuity

BBB

Click

AAA

Click

FROM

UTC

SPD/ALT

PPOS

1215

280/FL130

c

- - - - - - F-PLN DISCONTINUITY - - - - - - CCC FROM

 AAA

UTC

SPD/ALT

1210

280/FL130

- - - - - - F-PLN DISCONTINUITY - - - - - - CCC

1219

LAT - DISCONT

5

280/FL130

AHEAD

1219

280/FL130

VERTICAL

ALT A i

T

h

Auto Disengagement of Vertical V/S excessive

6

VERTICAL - ALT*

Click Click

7

Triple clicks come 5’’ later if no pilot act on on or V/S Knobs 

VERTICAL - ALT*

Click Click

Triple clicks come 5’’ later if no pilot act on on or V/S Knobs  V/S boxed white for 10 more seconds  V/S engaged on current A/C V/S 

8

VERTICAL - ALT set below current altitude

9

VERTICAL - ALT set below current altitude

Click Click Click Triple clicks come 5’’ later if no pilot action on ALT or V/S Knobs  V/S boxed white for 10 more seconds 

10

VERTICAL - Auto disengagement of vertical

11

VERTICAL - Auto disengagement of vertical

12

VERTICAL - Auto disengagement of vertical

13

VERTICAL - Excessive V/S in climb

(or VLS-5) Click Click

14

VERTICAL - Excessive V/S in climb

Note: This does not apply to A320 without GSP 

(or VLS-5) Click Click

15

VERTICAL - Excessive V/S in descent

Reaching Vmax VFE VLE VMO) Click Click Click

16

VERTICAL - Excessive V/S in descent

o e: s oes no app y o A320 without GSP 

Reaching Vmax VFE VLE VMO) Click Click Click

17

VERTICAL - FD orders not followed Click Click Click

If Speed ro ec on activated,  pitch up will occur 

Note: This does not apply to w ou

Reaching VMAX + 4 VMO VLE VFE

18

VERTICAL - FD orders not followed Click Click Click

Reaching Vls-2 (or Vls-17)

19

VERTICAL Note: This does not apply to A320 without GSP 

- FD orders not followed Click Click Click

Reaching Vls-2 (or Vls-17)

20

If Alpha  protection is reached, Alpha oor w engage