Service difficulty report · Computer · Boeing 7379

Difficulty date
September 10, 2024
Submitted
September 11, 2024
Operation
Air carrier
Aircraft
N37562
Make and model
Boeing 7379
Aircraft serial
67591
Aircraft time
4,440 hours, 1,513 cycles
Part
Computer
Part number
8221604102
Part serial
4094G8
Condition
Faulty
Location
Flt Control
Part time
4,440 hours, 1,513 cycles
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

ROLL AUTHORITY ON FINAL 7NM 1500FT PER DFCS BITE SEE PHOTOS. REF AMM 22-11-00 PER FIM 22-11 TASK D79. PER AMM22-11-25-710-801 TEST PASS NO FAULTS . ADD EMP:U102168 NEED TO CONTINUE WITH FIM 22-11-D79. PERFORMED AMM 27-11-00-710-801, OPS CHECK IS GOOD. PERFORMED AMM 27-61-00-710-801, OPS CHECK IS GOOD. BOTH REQUIRED PER FIM 22-11 D 79. AMM TASKS 22-11-25-710-801, 22-23-00-710-802, 27-11-00-730-801, 27-21-00-700-805 & 27-21-00-700-807 STILL NEED TO BE ACCOMPLISHED PER FIM 22-11 D 79. ATTEMPTED TO PERFORM LAND VERIFY TEST TO NARROW DOWN TROUBLESHOOTING. ACFT IS FAILING DUAL STAB AND SUBSEQUENTLY MACH TRIM TESTS AND GIVING HARD FAULT OF 22-11191 MT CMD MON. ADDING FCC PART PRECAUTIONARY. ABOVE UPDATE FOR MESSAGE 22-11191 TRANSCRIBED TO LOGPAGE 9215536 SEE REFERENCED LOGPAGE FOR DISPOSITION PERFORMED AUTOPILOT AILERON ACTUATOR TEST IN REFERENCE TO B737 AMM 22-11-25-710-801 TEST PASSED PERFORMED YAW DAMPER SYSTEM TEST IN REFERENCE TO B737 AMM 22-23-00-710-802 SYSTEM TEST PASSED UPDATED FOR SDR PERFORMED AILERON TRIM RESPONSE TEST IN REFERENCE TO B737 AMM 27-11-00-730-801 TEST PASSED ADD EMP:U388284, PERFORMED RUDDER TRIM SYSTEM TEST IN REFERENCE TO B737 AMM 27-21-00-700-807 TEST PASSED PERFORMED RUDDER TRAVEL TEST IN REFERENCE TO B737 AMM 27-21-00-700-805 TEST PASSED ALL TESTS IN B737 FIM 22-11 TASK D79 HAVE BEEN COMPLETED WITH NO FAULTS FOUND ADD EMP:U388284, COMPLETED B737 FIM 22-11-D79 WITH NO FAULTS FOUND SPOKE WITH TOMC OK TO CLEAR FCC A REPLACED ON LOGPAGE 9204147

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