S 715-235
(4)
Make sure that the YAW DAMPER UPR indication in amber shows on the main EICAS display:
(a)
Set the EIU SEL switch on the P2-2 panel to the L position.
(b)
Make sure that the YAW DAMPER UPR indication (amber) stays.
(c)
Set the EIU SEL switch on the P2-2 panel to the C position.
(d)
Make sure that the YAW DAMPER UPR indication (amber) stays .
(e)
Set the EIU SEL switch on the P2-2 panel to the R position.
(f)
Make sure that the YAW DAMPER UPR indication (amber) stays.
S 865-237
(5)
Close the 7C09 UPR YAW DAMPER circuit breaker on the P7 Overhead Circuit Breaker Panel and stop for 15 seconds.
S 715-239
(6)
Make sure that the INOP annunciator of the upper yaw damper goes off.
S 715-241
(7)
Make sure that the YAW DAMPER UPR indication (amber) does not show on the main EICAS display:
(a) Set the EIU SEL switch on the P2-2 panel to the L position.
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(b)
Make sure that the YAW DAMPER UPR indication (amber) does not show.
(c)
Set the EIU SEL switch on the P2-2 panel to the C position.
(d)
Make sure that the YAW DAMPER UPR indication (amber) does not show.
(e)
Set the EIU SEL switch on the P2-2 panel to the R position.
(f)
Make sure that the YAW DAMPER UPR indication (amber) does not show.
S 865-243
(8)
Open the 7C18 LWR YAW DAMPER circuit breaker on the P7 Overhead Circuit Breaker Panel.
S 715-245
(9)
Make sure that the INOP annunciator of the lower yaw damper on the Overhead Panel (P5) comes on.
S 715-247
(10)
Make sure that a YAW DAMPER LWR indication in amber shows on the main EICAS display:
(a)
Set the EIU SEL switch on the P2-2 panel to the L position.
(b)
Make sure that the YAW DAMPER LWR indication (amber) stays.
(c)
Set the EIU SEL switch on the P2-2 panel to the C position.
(d)
Make sure that the YAW DAMPER LWR indication (amber) stays.
(e)
Set the EIU SEL switch on the P2-2 panel to the R position.
(f)
Make sure that the YAW DAMPER LWR indication (amber) stays.
S 865-223
(11)
Close the 7C18 LWR YAW DAMPER circuit breaker on the P7 Overhead Circuit Breaker Panel and stop for 15 seconds.
S 715-249
(12)
Make sure that the INOP annunciator of the lower yaw damper goes off.
S 715-251
(13)
Make sure that the YAW DAMPER LWR indication (amber) does not show on the main EICAS display.
(a) Set the EIU SEL switch on the P2-2 panel to the L position.
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747-400 MAINTENANCE MANUAL
(b)
Make sure that the YAW DAMPER LWR indication (amber) does not show.
(c)
Set the EIU SEL switch on the P2-2 panel to the C position.
(d)
Make sure that the YAW DAMPER LWR indication (amber) does not show.
(e)
Set the EIU SEL switch on the P2-2 panel to the R position.
(f)
Make sure that the YAW DAMPER LWR indication (amber) does not show.
S 865-253
(14) Set the Ground-Test-Enable switch on the P461 Pilot's Overhead Maintenance Panel to the NORM position.
K. Air/Ground System Interface Test
S 865-212
WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
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本文链接地址：747-400 AMM 飞机维护手册 空调 AUTO FLIGHT(167)
