Flight Director Display
Turning a F/D switch ON displays command bars on the respective pilot’s attitude
indicator if command pitch and roll modes are engaged. If command pitch and roll
modes are not engaged, the F/D command bars do not appear. The F/Ds can be
operated with or without the A/P and A/T. F/D command modes can be used with
an A/P engaged in CWS.
F/D commands operate in the same command modes as the A/P except:
Normally, FCC A drives the captain’s command bars and FCC B drives the first
officer’s command bars. With both F/D switches ON, the logic for both pilots’ F/D
modes is controlled by the master FCC, and both FMA displays show the same
mode status.
The master FCC is indicated by illumination of the respective master (MA) F/D
indicator light. The master FCC is determined as follows:
Turning a F/D switch ON displays command bars on the respective pilot’s attitude
indicator if command pitch and roll modes are engaged. If command pitch and roll
modes are not engaged, the F/D command bars do not appear. The F/Ds can be
operated with or without the A/P and A/T. F/D command modes can be used with
an A/P engaged in CWS.
F/D commands operate in the same command modes as the A/P except:
- The takeoff mode is a F/D only mode.
- Dual F/D guidance is available for single engine operation.
- The F/D has no landing flare capability. F/D command bars retract from
view at approximately 50 feet RA on an ILS approach.
Normally, FCC A drives the captain’s command bars and FCC B drives the first
officer’s command bars. With both F/D switches ON, the logic for both pilots’ F/D
modes is controlled by the master FCC, and both FMA displays show the same
mode status.
The master FCC is indicated by illumination of the respective master (MA) F/D
indicator light. The master FCC is determined as follows:
- With neither A/P engaged in CMD, the FCC for the first F/D turned on is
the master. - With one or both A/Ps engaged in CMD, the FCC for the first A/P in CMD is
the master FCC, regardless of which F/D is turned on first.
