MN-FLT-OH-201
B-18 Page 5 of 22
Flight Crew Operations Manual Bulletin No. GOT-18 , Dated March 1, 2021 (continued)
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:
• 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.
F/D commands are removed one second after activation of stick shaker for AFDS
modes that do not have minimum speed reversion. The F/D command bars (both
pitch and roll) return when airspeed increases to the top of the minimum
maneuver speed (amber) bar. Refer to Minimum Speed Reversion in this section
for additional information.
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.
F/D modes are controlled directly from the respective FCC under certain
conditions. This independent F/D operation occurs when neither A/P is engaged
in CMD, both F/D switches are ON and one of the following mode conditions
exists:
• APP mode engaged with LOC and G/S captured
• GA mode engaged and below 400 feet RA
• TO mode engaged and below 400 feet RA.
For non-approach modes, if the pilot is flying manually but not following the
flight director guidance in the roll mode and then selects autopilot CMD
engagement, the autopilot will engage into the current flight director roll mode.
Independent F/D operation is indicated by illumination of both MA lights. When
independent operation terminates, the MA light extinguishes on the slaved side.
March 1, 2021
