(d)
Push the N or S key on the ISDU.
(e)
Put in the degrees and minutes of the local latitude on the ISDU. 1) Make sure that the local latitude shows on the left side of
the ISDU. 2) Make sure that the ENT key on the ISDU turns on.
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(f)
Push the ENT key to transmit the local latitude to the IRUs.
(g)
Push W or E on the ISDU.
(h)
Put in the degrees and minutes of the local longitude on the ISDU. 1) Make sure that the local longitude shows on the right side
of the ISDU. 2) Make sure that the ENT key turns on.
(i)
Push the ENT key to transmit the local longitude to the IRUs.
(j)
If you did a regular alignment, make sure that the ALIGN lights on the MSU turn off.
NOTE: The IRS is now aligned and in the navigation mode.
____
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN DAMAGE THEM.
(k) If you did a high latitude alignment, after 17 minutes, set the switches on the MSU to the NAV position from the ALIGN position. 1) Make sure that the ALIGN lights on the MSU turn off.
NOTE: The IRS is now aligned and in the navigation mode.
____
D. Put the Airplane Back to Its Usual Condition
S 862-019
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN DAMAGE THEM.
CAUTION:_______TURN THE SWITCHES ON THE MSU TO THE OFF POSITION. FAILURE TO TURN THE SWITCHES TO THE OFF POSITION CAUSES A HORN IN THE NOSE WHEEL WELL TO START.
(1)
Turn the switches on the MSU to the OFF position.
(2)
Turn off the EFIS cooling if it is not necessary (AMM 21-58-02/501).
(3)
Turn off the IRU cooling if it is not necessary (AMM 21-58-03/501).
S 862-015
S 862-016
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S 862-014
(4) Remove the electrical power if it is not necessary (AMM 24-22-00/201).
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INERTIAL REFERENCE SYSTEM - ADJUSTMENT/TEST
___________________________________________
1. General_______
A. This subject has three tasks. The first task is an operational test of the inertial reference system (IRS). The second task is a system test of the IRS. The third task is an IRS self-test for scheduled maintenance.
TASK 34-28-01-715-047
2. Operational Test - Inertial Reference System____________________________________________
A. General
(1) This task contains two procedures:
(a)
Self-Test
(b)
Built-In Test Equipment (BITE) Test
B. References
(1)
AMM 21-58-02/501, EFIS Cooling System
(2)
AMM 21-58-03/501, Equipment Cooling System
(3)
AMM 24-22-00/201, Manual Control
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本文链接地址：737-300 400 500 AMM 飞机维护手册 导航 NAVIGATION 2(74)
