TB20 MAINTENANCE MANUAL 22 AUTO FLIGHT TB20飞机维护手册 22 自动飞行(42)

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(3) On the pilot's control wheel, operate simultaneously both parts of "TRIM UP-DN" split rocker switch in "UP" then in "DN" direction.
 
(a) "HDG" warning flag on the M73 horizontal situation indicator (HSI) goes off.
(a) The A82 flight computer displays "PFT" message followed by a sequence number corresponding to the internal test in progress.
(b) If all internal tests are correct :
- all display segments illuminate, With KI256 flight director indicator
- the command bar of the M30 flight director indicator appears,
All
- the LS10 buzzer sounds.
(a) The control wheel of the pitch trim located on the L.H. side of the control pedestal moves to the indicated direction.
 

AMA
Validity : KFC 225 22-12-00Page 501
(BA) JUN 04
 
ACTION RESULT
(4) Manually actuate the control wheel of the pitch trim to the nose down direction. Move pointer of pitch trim position indicator up to stop.
(5) On the pilot's control wheel, hold both (a) The elapsed time from nose down stop
parts of "TRIM UP-DN" split rocker to
position to nose up stop position must be
 "UP" position. Measure the time 40 6 seconds.
necessary for the position indicator pointer to reach nose up position stop. Release "TRIM UP-DN" split rocker.
(6) Make sure pointer of pitch trim position indicator is up to nose up position. ±
(7) On the pilot's control wheel, hold both (a) The elapsed time from nose up stop position
parts of "TRIM UP-DN" split rocker to
to nose down stop position must be
 "DN" position. Measure the time 40 ± 6 seconds.
necessary for the position indicator pointer to reach nose down position stop. Release "TRIM UP-DN" split rocker.
I (8) On the pilot's control wheel, push and hold (a) The control wheel of the pitch trim must not
"AP DISC TRM INT" pushbutton. move and must rotate freely when it is
 Operate simultaneously both parts of operated manually.
"TRIM UP-DN" split rocker switch in "UP"
then in "DN" direction.
I (9) Release the pushbutton.
I (10) Push momentarily "AP" pushbutton of the (a) "AP" pushbutton actuation engages all servo
A82 flight computer. actuators.
ll (11) Push and hold the "CWS" pushbutton of (a) "CWS" pushbutton actuation disengages all
the pilot's control wheel. servo actuators as long as the pushbutton remains held. Make sure that the pilot's control wheel rotates freely on the pitch and roll axes.
I (12) Release "CWS" pushbutton and depress (a) On A82 flight computer display, "AP"
　
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