Automatic Flight Flashcards
What does TO/GA AFDS command when engaged for takeoff?
The AFDS commands pitch attitude in the following order:
-15* nose up after lift-off until a sufficient climb rate is acquired. Then, pitch is commanded to maintain MCP speed plus 20 kts.
What does AFDS pitch command if an engine failure occurs at or after lift-off?
At lift-off:
-If an engine failure occurs on the ground, the pitch command target speed at lift-off is V2 or airspeed at lift-off, whichever is greater.
After Lift-off:
-If an engine failure occurs, the pitch command target speed is:
-V2, if airspeed is below V2.
-Existing speed if airspeed is between V2 and V2 + 20
-V2 + 20, if airspeed is above V2 + 20
When below 2,000 ft RA, what N1 will the A/T command with one push of either TO/GA switch?
Thrust advances toward the reduced go-around N1 to produce 1000 to 2000 fpm rate of climb.
What N1 will the A/T command with a second push of the To/GA switch?
The A/T advances to the full go-around N1 limit.
During a go -around, what airspeed will be commanded after pushing either TO/GA switch?
The command airspeed cursor automatically moves to a target airspeed for the existing flap position based on maximum takeoff weight calculations.
During a go-around, what changes in the MCP pitch mode if you engage the autopilot?
TO/GA terminates and LVL CHG engages.
During Approach, how do you exit the APP(VOR/LOC & G/S captured) mode?
-Pushing a TO/GA switch
-Disengage A/P and Turning off both F/D switches(without having one engaged)
-Retuning a VHF NAV receiver
What does white “A/T LIM” indication mean on Thrust Mode Display?
The FMC is not providing the A/T system with N1 limit values. The A/T is using a degraded N1 thrust limit from the related EEC.
What does a flashing “8” of “A” mean on IAS/MACH window?
The overspeed “8” or underspeed “A” limiting symbol appears when the commanded speed cannot be reached.
In which MCP pitch mode are SPD INTV and ALT INTV available?
VNAV
In order to arm VNAV on the ground, what criteria must be met?
-A valid flight plan has been entered.
-Performance data has been entered and executed.
-Both flight director switches have been switched ON.
On the ground with the VNAV armed prior to takeoff, at what altitude does the VNAV become active?
400 ft AGL
During a VNAV PTH descent, what speed will the FMC attempt to maintain?
A path descent uses the target speed for planning purposes only. There is no attempt to maintain the target speed during the idle portion of the descent.
What is the importance of an amber FMC Alert light on Autopilot
The light indicates an MCDU or Fuel alerting message is displayed in the MCDUs scratchpad. In the MAX, Fuel alerts will also be indicated on the Engine Display.
What is the green rectangle around the pitch, roll and A/P status in the FMA?
Mode change highlight symbol (green box) means the mode was engaged within the last 10 seconds.
