Automatic Flight System Flashcards
What are the 3 flight mode annunciators?
Autothrottle, Roll, & Pitch.
What does CMD (green), annunciated on the PFD, mean?
One or both autopilots are engaged.
When does a rectangle around a Flight Mode Annunciator (FMA) appear?
When a mode changes.
How does an FMA display an Armed Mode?
Shown in smaller white letters at the bottom of the flight mode annunciation boxes.
What FMA annunciation indicates that power has been removed from the autothrottle servos during takeoff?
THR HLD
Pushing an illuminated mode switch on the Mode Control Panel (MCP) does what to the mode?
Indicates the mode can be deselected by pushing the switch.
What is displayed by turning a Flight Director (F/D) switch ON?
Turning a F/D switch ON displays command bars on the respective pilot’s attitude indicator if command pitch and roll modes are engaged.
How is the master FCC determined?
Is determined by the first F/D switch being turned on with no autopilot or coupled with the first engaged autopilot.
What are the required conditions for A/P engagement?
No force is being applied to the control wheel & the STAB TRIM AUTOPILOT cutout switch is at NORMAL.
What does the STAB OUT OF TRIM (amber) light indicate?
Autopilot is not trimming the stabilizer properly.
When does the A/P Disengage Light illuminate STEADY RED?
Stabilizer out of trim below 800 ft RA on dual channel approach, ALT ACQ mode inhibited during A/P go-around if stabilizer not trimmed for single A/P operation, disengage light TEST switch held in position 2, or automatic ground system tests fail.
What does the A/T LIM indication (white) on the Upper Display Unit mean?
Indicates the FMC is not providing the A/T system with N1 limit values.
When is the MCP IAS/MACH display blank?
VNAV mode engaged, A/T engaged in FMC SPD mode, or during 2 engine AFDS go-around.
What triggers/causes the MCP IAS/MACH display to automatically and manually switch between indicated airspeed and Mach number?
Automatic changeover occurs at approximately FL260. Manual changeover can be initiated by pressing the C/O switch.
The Bank Angle Selector sets maximum bank angle for AFDS operation in which Roll modes?
HDG SEL or VOR modes.
Engaging LNAV outside of 3 NM from an active route requires what intercept criteria?
Be on an intercept course of 90° or less & intercept route segment before active waypoint.
After engaging LVL CHG for a climb, what does the FMA annunciates for the Autothrottle mode?
N1 for climb and RETARD followed by ARM for descent.
After localizer and glide slope capture, what will exit the APP mode?
Pushing a TO/GA switch, disengaging A/P and turning off both F/D switches, or retuning a VHF NAV receiver.
What will happen after activating either TO/GA switch above 2,000’ RA with flaps up and G/S not active?
Nothing.
When is Glide Slope capture inhibited?
Prior to Localizer capture.
After pushing TO/GA once, on a dual A/P approach prior to touchdown, what will the roll mode command?
Roll Mode annunciation on the FMA is blank (Current Track)
After pushing TO/GA once, on a dual A/P approach prior to touchdown, what rate of climb will the N1 thrust provide?
1000 to 2000 fpm rate of climb.
With the second push of TO/GA, on a dual A/P approach prior to touchdown, what N1 thrust is commanded?
Full go-around N1 limit.
When will overspeed or underspeed limiting symbols appear in the MCP speed window?
When the commanded speed cannot be reached.
