Service difficulty report · Bypass Valve · Boeing 7772Q8

Difficulty date
November 16, 2012
Submitted
December 3, 2012
Operation
Air carrier
Aircraft
N774AM
Make and model
Boeing 7772Q8
Aircraft serial
28689
Aircraft time
45,372 hours, 6,927 cycles
Part
Bypass Valve
Condition
Failed
Location
Nlg Steering
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ACFT RETURNED TO PLATFORM DUE TO DURING TAXING THE NOSE WHEEL STEERING WAS STUCK. MX PERSONNEL PERFORMED THE FIM 32-51 TASK 808 PROCEDURE, DETECTING THE BY PASS VALVE STUCK; SO THE VALVE ASSY WAS LUBRICATED IAW MM 31-51-07, TESTED CORRECT.

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