SDR 2007UALA04965

Service difficulty report · Wire · Boeing 747451

Difficulty date: December 4, 2007
Submitted: December 6, 2007
Operation: Air carrier
Aircraft: N105UA
Make and model: Boeing 747451
Aircraft serial: 26473
Aircraft time: 55,175 hours, 6,697 cycles
Engine: Pwa PW4056
System (JASC): 2697 · Fire Protection System Wiring
Part: Wire
Part number: W3506503506
Condition: Failed
Location: Nr 3 Fire Loop
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

F-C REPORTED FIRE LOOP A 3 ENG. REPLACED WIRES W3506-503 AND 506 REF SWP 20-30-11, CHECKED ROUTING OF WIRES ON AC 8174 ENG 3-4, AC 8105 ENG NR 3, WIRES ROUTED DIFFERENTLY, REROUTED REPLACED WITH CORRECT CLAMPS. ACCOMP TEST REF MM26-11-00, OPS CHECK PASSED.