Meggitt 60-2, Руководство по эксплуатации

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4-4 2nd Ed: Nov 01, 01
SYS 60-2 POH
4.1.2 Pitch/Altitude and Vertical Speed
The following is a step by step procedure for pre-flighting the Pitch/
Altitude and Vertical Speed Systems:
1. Be sure the Autopilot Master Switch is ON, and that a roll axis
mode has been selected.
2. Move the control wheel to level flight position and engage the VS
mode. Press the UP modifier switch and hold. The control wheel
should move aft, slowly. Press the DN switch and hold. The control
wheel should move slowly forward.
NOTE: On some aircraft the autopilot may not be able to lift the
elevators without pilot assistance during ground operation.
3. Overpower the pitch function by pulling the control wheel slowly
aft. The TRIM annunciator and DN switch should illuminate and the
audio warning should sound. Slowly push the control wheel forward.
The TRIM annunciation and UP switch should illuminate and audio
warning should sound. During overpower, there should be no
excessive play in the controls or ratcheting noise.
4. Pitch Limiter Test:
A. Place the Master Switch to TEST position.
B. Engage HDG mode.
C. Engage ALT mode.
D. Center and hold the control wheel, press and hold the UP
switch. Pitch should disengage after about .5 seconds, release
UP switch, pitch should reengage.
E. Hold the control wheel, press and hold the DN switch. Pitch
should disengage after about .5 seconds, release DN switch,
pitch should reengage.
CAUTION
If the pitch servo does not disengage when either the UP or
DN modifier switch is engaged, the limit accelerometer may
have failed. Do not use the autopilot pitch section until the
problem is corrected. This check should be performed once
per flight day. (Check FAA approved AFM supplement.)
NOTE: If optional autotrim is not installed, this is the end of the
preflight test. Press and release the disconnect switch on the
control wheel, and place the Autopilot Master Switch in the OFF
or ON position. Move aircraft controls to ensure freedom of
movement and to make sure the autopilot has disconnected.