Autoflight Flashcards
What does the FMC provide?
N1 limits and target N1 for the autothrottles and command airspeeds for autothrottles and AFDS
The AFDS is a dual system consisting of 2_____ and a single ______.
FCCs; MCP
How can AFDS mode be disengaged?
selecting another command mode or by disengaging the autopilot and turning the FDs off.
How can you engage the autopilot?
pushing a separate CMD or CWS engage.
How is autopilot engagement in CMD or CWS inhibited?
force is being aplied to the control wheel or the STAB TRIM AUTOPILOT CUTOUT switch is not in normal.
2 autopilots can be engaged at the same time unless?
approach mode is used.
Dual autopilot operation provides what?
control through landing flare and touchdown or automatic go around.
T/F: In single autopilot operation, full auto flare and touchdown capability and autopilot go around are available.
False.
How can you disengage the autopilot?
push autopilot disengage switch, pushing either TOGA switch w/ a single AP engaged in CWS or CMD; below 2000’ RA or with flaps not up or glideslope engaged; pushing either TOGA switch with a single AP engaged in CWS or CMD above 2000 FA with flaps not up or glideslope engaged. Pushing either TOGA switch after touchdown with both APs engaged in CMD. Pushing an illuminated engage switch. Pushing the AP disengage bar down. Activating either pilots control wheel switch. Moving the STAB TRIM AUTOPILOT CUTOUT switch to CUTOUT. Either L or R IRS system FAULT light are illuminated. Loss of electrical power or a sensor input which prevents proper operation of the engaged autopilot and mode. Loss of hyraulic system pressure.
Dual channel autopilot operation is possible only when ____ generators are powering the busses.
2
How many RAs are there?
2
With one RA inop, the autopilot will disconnect 2 seconds after ____ and ____ capture
LOC; Glideslope
T/F: Command pitch and roll modes must be engaged for the FD to show.
True.
FD commands are the same as Autopilot except:
T/O mode is a flight director mode only
Dual FD guidance is availble for single eng ops
FD has no landing flare capability
FD command bars retract from view at ~ ______ on an ILS approach
50 feet RA
With both FD switches on, the logic for both pilots FD modes is controlled by the _______.
Master FCC.
Master FCC logic
- With neither AP engaged, the FCC for 1st FD turned on is Master (MA)
- With 1 or both APs engaged in CMD, the FCC for the first AP in CMD is the master FCC, regardless of which FD is on first.
How can you tell the FDs are in independent mode?
Both MA lights are on in the MCP.
If a generator fails during a FD TO or GA or while in Dual FD approach mode below 800’, the FCC on the unaffected side positions the FD on which side?
both sides.
What does FD mean above the ADI?
FD is on and the AP is either OFF or in CWS.
What does CWS P mean?
pitch mode is engaged in CWS mode
What does CWS R mean?
the roll mode is engaged in CWS.
What does SINGLE CH mean?
annunciated for single AP ILS approaches. It appears after Localizer capture.
What happens when you push CWS on the MCP?
engages AP in pitch and roll axes and displays CWS P and CWS R on FMAs.