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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 825-548
(15) Move the left AOA vane to -10 degrees with the angular displacement measuring tool.
(a) Make sure the AOA on the bus reader is -10.36 to -9.64 degrees
S 975-361
(16)
Make a record of the No. 2 left AOA vane value.
S 865-E15
(17)
Close the 7A12 AOA L circuit breaker on the P7 panel.
S 085-008
(18)
Disconnect the ARINC 429 bus reader from the L ADC front panel TEST ONLY connector.
S 485-363
(19)
Install an angular displacement measuring tool on the right AOA vane.
S 825-549
(20)
Move the right AOA vane to 0 degrees with the angular displacement measuring tool.
S 485-365
(21)
Connect the ARINC 429 bus reader to the R ADC front panel TEST ONLY connector.
S 865-336
(22)
Set the ARINC 429 bus reader to these parameters:
Octal Label: 221
SDI: 2 (Bit 10 = 1, Bit 9 = 0)
Display: Engineering Units
(a) Make sure the AOA on the bus reader is -0.36 to 0.36 degrees.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 825-550
(23) Move the right AOA vane to 10 degrees with the angular displacement measuring tool.
(a) Make sure the AOA on the bus reader is 9.64 to 10.36 degrees.
S 825-551
(24) Move the right AOA vane to -10 degrees with the angular displacement measuring tool.
(a) Make sure the AOA on the bus reader is -10.36 to -9.64 degrees
S 975-366
(25)
Make a record of the No. 2 right AOA vane value.
S 975-552
(26)
Make sure the No. 2 right AOA vane value is within 0.54 degrees of the No. 1 left AOA vane value.
S 975-553
(27)
Make sure the No. 2 right AOA vane value is within 0.54 degrees of the No. 2 left AOA vane value.
S 865-E18
(28)
Set the ARINC 429 bus reader to these parameters:
Octal Label: 350
SDI: 2 (Bit 10 = 1, Bit 9 = 0)
Display: Binary
(a) Make sure bits 11 and 12 of label 350 are in the zero state.
S 865-554
(29) Open the 7A16 AOA R circuit breaker on the P7 panel.
(a) Make sure bit 11 of label 350 is in the zero state and bit 12 is in the one state.
S 865-555
(30)
Open the 7A17 AOA ALTN R circuit breaker on the P7 panel.
(a) Make sure bit 11 of label 350 is in the one state.
(31)
Close the 7A17 ALTN AOA R circuit breaker on the P7 panel.
S 825-556
(32)
Move the right AOA vane to 0 degrees with the angular displacement measuring tool.
S 865-372
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-374
(33) Set the ARINC 429 bus reader to these parameters:
Octal Label: 221
SDI: 2 (Bit 10 = 1, Bit 9 = 0)
Display: Engineering Units
(a) Make sure the AOA on the bus reader is -0.36 to 0.36 degrees.
S 825-557
(34) Move the right AOA vane to 10 degrees with the angular displacement measuring tool.
(a) Make sure the AOA on the bus reader is 9.64 to 10.36 degrees
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