Automatic Flight Flashcards
What does TO/GA AFDS command when engaged for takeoff?
The AFDS commands pitch altitude in the following order:
15 degrees nose up after lift-off until a sufficient climb rate is required. Then pitch commanded to maintain MCP speed plus 20 kts
What Does the AFDS pitch command if an engine failure occurs at or after lift-off?
At lift-off:
- If engine failure on the ground, the pitch comand target speed at lift-off is V2 or airspeed at lift-off, whichever is greater
After lift-off;
- V2, if airspeed is below V2
-Existing speed if airspeed is between V2 & 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? How about a 2nd push of TO/GA?
Thrust advances toward the reduced go-around N1 to produce 1000 to 2000 fpm rate of climb.
Full go-around N1 Limit
During a go-around, what airspeed will be commanded after pushing either TO/GA switch?
The commanded 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
- Disengaging A/P and turning off both F/D switches
- Retuning a VHF NAV receiver
What does white “A/T LIM” idication mean on Thrust Mode Display?
The FMC isn’t 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” or “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
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 FD switches have been switched on
What altitude does VNAV become active?
400’ 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 A/P / AT Indicators Panel?
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.
What is the best indication to ensure an AP is engaged after selection?
FMA indicationg a changeover from FD to CMD
