Saab 340B, Operation Manual

Page: 175 / 670

AUTOFLIGHT, CAT I
Operation
Aircraft Operations Manual
3.2
S
PAGE 17
Apr 01/15
CONDITIONS ABNORMAL PROCEDURES
Cont’d
Check mode annunciation before re − engagement.
CAUTION
3. AP engage lever ENGAGED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− Try to re − engage AP.
After landing, with AP and YD disengaged, and before power shut − down, per-
form the DIAGNOSTICS REPORT MODE:
See AOM 3.1, Fig. 6 FCS diagnostics.
3.3 ABNORMAL
BEHAVIOR INDICATIONS
One or more of the following:
− AP does not follow FD commands.
− AP impossible to disengage in one or more channels.
− Elevator trim indicator shows abnormal trim action.
− Single stroke chime.
− Master caution light.
− FD hard over.
− AVIONICS light on CWP.
− Mistrim annunciation (EL, RUD, AIL) in both EADI’s, not correlated to rapid
maneuver.
ACTIONS
1. Overpower AP and return controls to normal.
2. AP disconnect button PRESS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− If disengagement successful: end of procedure.
If not successful:
3. CB’s PULL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− FD G − 13, N − 10.
− Do not re − engage AP.
After landing, with AP and YD disengaged, and before power shut − down, per-
form the DIAGNOSTICS REPORT MODE:
See AOM 3.1, Fig. 6 FCS diagnostics.