Autoflight Flashcards
While the auto pilot is engaged, The use of aileron trim is
Prohibited
The AFDS is a dual system consisting of how many individual FCC‘s and a single mode control panel
Two
All AFDS modes can be disengaged when you select another command mode or
By disengaging the AP and turning the FD’s off
Auto pilot engagement in CMD or CWS is inhibited unless
- No force is being applied to the control wheel
- The stab trim auto pilot cut out switch is at normal
When you are in a single AP operation full automatic flair and touchdown capability and AP go around capability are
Not available
What steering command allows both of the APs to be engaged at the same time
Approach mode
The AP automatically disengages when
- activating either pilots control wheel trim switch or loss of respective hydraulic system pressure
- Pushing either AP disengage switch or pushing either TOGA switch with a single AP engaged in CWS or CMD below 2000 feet RA
On the 737 the FD’s can be operated
With or without the AP and AT
How do you know which FCC is the master
By illumination of the respective master (MA)FD indicator light
What following indications are displayed in the AP status display located above the attitude indicator
- CMD, FD, 1CH
- CWSP, CWSR
What does CMD indicate in the auto pilot status display of the AFDS
One or both auto pilots are engaged
What does CWS P indicate in the auto pilot status display of the AFDS
Pitch mode engaged in CWS
What does CWSR indicate in the auto pilot status display of the AFDS
Roll mode engaged in CWS
What does single CH indicate in the auto pilot status display of the AFDS
For a single AP ILS approach annunciates after localizer capture and remains on for entire approach
What does in one indicate on the AFDS flight mode annunciations autothrottle mode
The auto throttle maintains thrust at the selected N1 limit displayed on the thrust mode display, including full go around N1 setting
What does GA indicate on the AFDS flight mode annunciations autothrottle mode
The autothrottle maintains thrust at reduced go around setting
What does FMC SPD indicate on the AFDS flight mode annunciations auto throttle mode
The autothrottle maintains speed commanded by the FMC. The autothrottle is limited to the N1 value shown on the thrust mode display
What does MCP SPD indicate on the AFDS flight mode annunciation autothrottle mode
The autothrottle maintained speed set in the MCP IAS/MACH display. The autothrottle is limited to the N1 value shown on the thrust mode display
What does THR HLD indicate on the AFDS flight mode annunciations auto throttle mode
The thrust lever autothrottle servos are inhibited. The Pilot concert the thrust levers manually
To engage a TO/GA mode for takeoff _____ and you have to press either TO/GA switch
Both FD switches must be on
To engage a TO/GA mode for go around, press either TO/GA switch when
- in-flight below 2000 feet radio altitude
- Not in takeoff mode and either FD switch on or off
While you are in the pitch mode, VNAV SPD commands
The AFDS to maintain the FMC speed displayed on the airspeed indicator and/or the CDU climb or decent pages
In the pitch mode, the a FDS flight mode annunciation VNAV PTH commands
The a FDS to maintain FMC altitude or decent path with pitch commands
In the pitch mode the AFDS flight mode annunciation V/S engaged commands
Pitch to hold selected vertical speed
In the pitch mode the AFDS flight mode annunciation ALT ACQ commands
A transition maneuver entered automatically from a V/S, LVLCHG, or VNAV climb or dissent to the selected MCP altitude
In the pitch mode the AFDS flight mode annunciation ALT hold commands
Pitch to hold MCP selected altitude or uncorrected barometric altitude at which ALT hold switch was pushed
In the pitch mode the AFDS flight mode annunciation MCP SPD commands
The AFDS to maintain the IAS/MACH window air speed or mach
In the pitch mode the AFDS flight mode annunciation G/S engaged commands
The AFDS to follow the ILS glideslope
In the pitch mode the AFDS flight mode annunciation flare engaged commands
During a dual AP ILS approach, flare engages at 50 feet radio altitude. Flare accomplishes the auto land flare maneuver
In the role mode the AFDS flight mode annunciation LNAV commands
The AFDS to intercept and track the active FMC route
In the role mode the AFDS flight mode annunciation HDG SEL commands
The aircraft to turn to, or remain on the heading selected in the MCP heading display
Looking at the mode control panel speed mode engages automatically when
- ALT ACQ engages or ALT hold engages
- VS engages or GS capture occurs
If you push the speed intervention (SPD INTV) switch on the moat control panel when VNAV is engaged this
Reveals the IAS/MACH display, activates FMC speed intervention, displays the FMC target speed, and allows the IAS/MACH selector to be used to set the desired speed
If you engage VNAV, the FMC commands the AFDS pitch and _____ to fly vertical profile selected on the _____
- autothrottle
- FMC CDUs
While you are in a VNAV SPD decent, the autothrottle holds _____ and the AFDS _____
Idle; holds FMC target speed
While you are in a VNAV PTH decent, the autothrottle holds ____ and the AFDS _____
Idol but can command FMCSPD mode if ground speed becomes too low to maintain FMC vertical path; Tracks FMC descent path
If you push the level change (LVL CHG) switch in a climb this commands the auto throttles to hold _____ thrust and the AFDS to hold selected airspeed
Limit
If you push the level change (LVL CHG) switch in a decent, this commands the autothrottles to hold ____ thrust and the AFDS to hold selected airspeed
Idle
While you are in altitude hold, if the altitude selector on the mode control panel is rotated in any direction, the ___ mode is armed
V/S
When you are actively descending or climbing with VNAV engaged, if the ALT INTV switch is pushed, the next altitude restriction in the FMC will be
Eliminated
Pushing the LNAV switch commands the AFDS roll to intercept and track the active _____ on the mode control panel
FMC route
Initially, pushing HDG SEL (heading select) switch commands a turn in the shortest direction towards the heading bug
True
Pushing the approach (APP) switch arms the AFDS for what
Localizer and glideslope capture
Minimum altitude for use of auto pilot on an approach: non-precision approaches
50’ below MDA/DA
The minimum altitude for use of the auto pilot on an ILS approach is
50 feet AGL
Auto land maximum tailwind for B737 with flaps 30 and field elevation of 4000 to 6000
5 kts
Auto land maximum tailwind for B737 with flaps 30 and field elevation 4000 feet or less
10 kts
What does ARM on the AFDS flight mode annunciations auto throttle mode indicate
No autothrottle mode engaged. The thrust lever autothrottle servos are inhibited; the pilot can set the thrust levers manually
