B-18 Page 8 of 22
MN-FLT-OH-201
Flight Crew Operations Manual Bulletin No. GOT-18 , Dated March 1, 2021 (continued)
Minimum Speed Reversion (continued)
There is no minimum speed reversion from the following modes:
• ALT HOLD
• VNAV ALT (as installed)
• VNAV PTH (in a level segment)
• VNAV PTH (not in a level segment and flaps 15 or greater)
• V/S (flaps 15 or greater)
• G/P (as installed)
• G/S
In the above modes with the autopilot engaged, the autopilot disengages and the
F/D command bars (both pitch and roll) are removed one second after stick
shaker activation. When airspeed increases to the top of the minimum maneuver
speed (amber) bar, the F/D command bars (both pitch and roll) return and the
autopilot can be re-engaged. If the previous F/D pitch commands were ALT
HOLD, VNAV ALT (as installed) or VNAV PTH (in a level segment), the F/D
pitch commands return in MCP SPD mode. Both the Indicated Airspeed (IAS)
display and the speed bug will reference the existing airspeed when the F/D
command bars return into view. If the previous F/D pitch commands were V/S
(flaps 15 or greater), VNAV PTH (flaps 15 or greater), G/S or G/P (as installed),
the F/D pitch commands return in the previous V/S, VNAV PTH, G/S or G/P (as
installed) mode, respectively. For all cases the roll command returns in the
previous mode.
Note:
It is possible that stick shaker does not occur simultaneously on both
the Captain and First Officer side due to AOA vane angle tolerances.
In the event that stick shaker does not occur simultaneously, F/D
command bars are removed one second after stick shaker activates on
that side.
March 1, 2021