(2)
When the GYRO warning flag retracts from view, pull the cage knob and hold it.
S 865-005
(3)
After the indicator becomes stable at the zero pitch and the zero roll position, release the knob quickly.
NOTE: Do not let the cage knob hit against the indicator front.
____
S 715-006
(4)
After 6 minutes, make sure the pitch and roll show | 1.0 degree of airplane attitude.
S 715-007
(5)
Open the STBY INSTR ATTD IND circuit breaker and make sure the GYRO warning flag comes into view.
S 715-008
(6)
Close the STBY INSTR ATTD IND circuit breaker and make sure the GYRO warning flag retracts from view.
F. Test Of The Standby ILS Display Function
S 865-009
(1)
Operate the central maintenance computer (CMC) from the left CDU (AMM 45-10-00/501).
S 865-010
(2)
Tune to an ILS frequency (Ref 34-31-00/501).
S 865-011
(3)
Set the mode selector switch on the standby attitude/ILS indicator to APP.
S 745-012
(4)
Do a left ILS receiver ground test from the CDU (Ref 34-31-00/501).
(a) Look at the standby attitude/ILS indicator and make sure that these indications occur: 1) The G/P and LAT flags are in view for approximately 3
seconds.
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2) The G/P and LAT flags retract from view for approximately 2 seconds.
3) The lateral deviation bar moves to 1 mark to the left side of the center for approximately 3 seconds. At the same time, the vertical (glide path) deviation bar moves to 1 mark above the center.
4) The deviation bars move to 1 mark down and 1 mark to the right side of the center until the end of the test. 5) Make sure that the CDU shows PASS.
S 865-013
(5)
Set the mode selector switch to B/CRS.
S 745-014
(6)
Do a left ILS receiver ground test from the CDU (Ref 34-31-00/501).
(a) Look at the standby attitude/ILS indicator and make sure that these indications occur: 1) The G/P and LAT flags are in view for approximately 3
seconds.
2) The G/P and LAT flags retract from view for approximately 2 seconds.
3) The lateral deviation bar moves to 1 mark to the right side of the center for approximately 3 seconds. At the same time, the vertical (glide path) deviation bar moves to 1 mark above the center.
4) The deviation bars move to 1 mark down and 1 mark to the left side of the center until the end of the test. 5) Make sure that the CDU shows PASS.
S 865-015
(7) Set the mode selector switch to OFF and make sure that these indications occur:
(a)
The G/P and the LAT flags are out of view.
(b)
The vertical and lateral deviation bars retract from view.
S 865-016
(8) Remove the electrical power if it is not necessary
(Ref 24-22-00/201).
TASK 34-24-00-735-017
3. System Test - Standby Attitude Reference System_______________________________________________
A. Standard Tools and Equipment
(1) VOR/ILS ramp test set - Instrument Flight Research Type NAV-401L
B. References
(1)
24-22-00/201, Electrical Power - Control
(2)
34-31-00/501, ILS Navigation System
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C. Access
(1) Location Zones
221 Control Cabin, LH
D. Prepare for the test.
S 865-018
(1)
Supply the electrical power (Ref 24-22-00/201).
S 865-019 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 导航 NAVIGATION 2(15)
