Automatic Flight Flashcards
Normally, the A/T is controlled automatically by which system to fly an optimized lateral and
vertical flight path through climb, cruise and descent?
LEFT FMC
SH 4.010 pg 1
How can the A\P be disengaged?
Pushing either A/P disengage switch Engaging electric trim on yoke Pushing CMD button Column or wheel force override Pushing the A/P disengage bar down …also TO/GA W/ single channel approach engaged below 2,000 or any alt with flaps extended and GS engaged SH 4.010 pg 15
With both FCC MA lights illuminated, how are the F/Ds being operated?
Independently - each FCC is controlling modes for related F/D
Used during takeoff, GA and during dual approaches
- TO mode engaged and below 400 RA
- App mode engaged with LOC and G/S captured (CAT2/3)
- GA mode engaged and below 400 ft RA (CAT2/3)
SH 4.010 pg 8
What does an amber CWS R above the attitude indicator mean?
Is a reversionary mode
ROLL mode - will hold bank angle - we do not use CWS
Will show above attitude indicator
SH 4.010 pg 2 and pg 13
From left to right, what are the three flight mode annunciations displayed above the attitude
indicator?
L to R: AUTOTHROTTLE - ROLL - PITCH
SH 4.010 pg 2
When will LNAV automatically disconnect?
Reaching end of route or discontinuity or not a valid TO waypoint
Intercepting an approach in APP or VOR/LOC
HDG mode
Loss of capture criteria (See engagement criteria, 3 nm, 90 deg. etc)
SH 4.010 pg 32
What happens when deviating by 200ft or more from the selected altitude?
Momentary ALT tone, flashing ALT box
SH 4.010 pg 41
If you are outside of 3NM of the active route segment, how will LNAV engage?
Intercept course of 90 degrees or less
Going to intercept the route PRIOR to waypoint
SH 4.010 pg 32
Which FMA annunciation indicates that power has been removed from the auto throttle
servos during takeoff?
THR HOLD will occur at 84 knots
What is the initial pitch attitude that the F/D will command after TO/GA is selected on a twoengine go around?
15 degrees nose up
Flight director commands what pitch attitude for single-engine go-around?
13 degrees
On a go-around with the auto throttle armed, after the second push of either TO/GA switch,
the thrust levers advance to ______.
Full G/A N1 Limit from EEC, provided to FMC, provided to autothrottles (bucking
bronco mode)
One click = reduced G/A mode - roughly 1000-2000fpm
SH 4.010 pg 27
If windshear is encountered during F/D takeoff or go around, the F/D pitch command bar
provides commands to maintain (BLANK??? )
…..
until vertical speed decreases to approximately +600 fpm..
THEN
….
target speed
F/D commands pitch bar to a 15 degrees nose up attitude. If VS continues to decrease, F/D continues to command a 15 degree pitch attitude until a speed of approximately stick shaker reached.
SH 4.010 pg 61
After localizer and glideslope capture, what will exit the APP mode?
TO/GA or
Cycling FDs or
Swapping nav frequencies
SH 4.010 pg 33
Except for when APP mode is engaged, selecting the non-operating A/P will do what?
Engages the other A/P (Cannot have two at once unless in APP mode)
transfer AP control
What mode will the A/T be in during a V/S descent?
MCP SPD
Autothrottles try to maintain speed in MCP window at selected VS rate,
but its not guaranteed to hold that speed
What does the STAB OUT OF TRIM (amber) light indicate?
STAB OUT OF TRIM = the autopilot is not trimming the stabilizer properly
A/P will stay engaged
SH 4.010 pg 18
With the pitch mode in MCP SPD, how is aircraft speed controlled?
Manually with the speed knob on MCP
SH 4.010 pg 27
The bank angle selector sets maximum bank angle for AFDS operation in which roll modes?
HDG SEL
VOR/LOC
SH 4.010 pg 29
