SDR 754004

Service difficulty report · Computer · Boeing 747228F

Difficulty date
November 27, 2007
Submitted
November 28, 2007
Operation
Air carrier
Aircraft
N754SA
Make and model
Boeing 747228F
Aircraft serial
21576
Aircraft time
112,574 hours, 22,227 cycles
Part
Computer
Part number
2590623907
Part serial
1050788
Condition
No Test
Location
Auto Pilot
Stage of operation
CR
How discovered
O
Nature of condition
F, G
Precautionary procedure
J, A

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

What was found

AUTOPILOT A WILL NOT ENGAGE AND AUTOPILOT B IS ALREADY DEFERRED. DUMPED FUEL AND DIVERTED INTO RKSI. AUTOPILOT A ROLL COMPUTER DOES NOT PASS SELF TEST. REPLACED AUTOPILOT A ROLL COMPUTER AND AUTOPILOT B MONITOR LOGIC UNIT.