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A
747-400
MAINTENANCE MANUAL
2) Set the antenna TILT control to 0 degrees.
(o) Set the first officer's IRS source select switch to the R
position.
(p) Set the IRS-C switch on the IRS mode select panel to ALIGN.
(q) Push and hold the IRU test switch on the front panel of the
right IRU (E1-6).
1) Make sure the first officer's PFD display and the ND
message after 10 seconds are as follows:
a) PFD attitude display - 5 |1 degrees pitchup
b) PFD attitude display - 45 |2 degrees right
c) ND message - WXR ATT
(r) Release the right IRU test switch.
1) Make sure the captain's PFD display and the ND message are
as follows:
a) PFD attitude display - normal
b) ND - WXR ATT message removed
(s) Set the first officer's IRU source select switch to C.
(t) Set the IRS-C switch on the IRS mode select panel to NAV.
(u) Set the IRS-R switch on the IRS mode select panel to ALIGN.
(v) Push and hold the IRU test switch on the front panel of the
center IRU (E1-6).
1) Make sure the first officer's PFD display and ND message
after 10 seconds are as follows:
a) PFD attitude display - 5 |1 degrees pitchup
b) PFD attitude display - 45 |2 degrees right
c) ND - WXR ATT
(w) Release the center IRU test switch.
1) Make sure the first officer's PFD display and the ND
message are as follows:
a) PFD attitude display - normal
b) ND - WXR ATT message removed
(x) Set the first officer's IRS source select switch to the R
position.
(y) Set the IRS-R switch on the IRS mode select panel to the NAV
position.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
(z) Set the SYS switch on the WXR control panel to the L position.
(aa) If no more tests of the weather radar system are necessary: Do the Weather Radar System Shutdown Task.
TASK 34-43-00-845-115
5. Weather Radar System Shutdown_____________________________
A. General
(1) Do the weather radar system shutdown when the weather radar operational test, ground test or system tests are done. Set the switches, controls and circuit breakers to the shutdown configuration as follows.
B. References
(1)
AMM 31-61-00/501, Integrated Display System
(2)
AMM 34-21-00/201, Inertial Reference System
(3)
AMM 34-61-00/501, Flight Management Computer System
(4)
AMM 45-10-00/201, Central Maintenance Computer System
(5)
AIRPLANES WITH PREDICTIVE WINDSHEAR ACTIVE; The weather radar system with PWS interfaces with the systems listed below:
(a)
AMM 31-51-00, Modular Avionics Warning Electronics Assembly
(b)
AMM 31-61-00, EFIS/EICAS Interface Unit
(c)
AMM 34-12-00, Air Data System
(d)
AMM 34-33-00, Radio Altimeter System
(e)
AMM 34-45-00, Traffic Alert and Collision Avoidance System
(f)
AMM 34-46-00, Ground Proximity Warning System
C. Access
(1) Location Zone
221 Control Cabin, Left
222 Control Cabin, Right
D. Procedure
S 845-116
(1) Shut down the weather radar system as follows:
(a) Set the switches and the controls on the WXR control panel as follows: 1) SYS switch - L
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