SDR UALA2012030901551

Service difficulty report · Connector · Boeing 767322

Difficulty date: March 9, 2012
Submitted: March 15, 2012
Operation: Air carrier
Aircraft: N661UA
Make and model: Boeing 767322
Aircraft serial: 27158
Aircraft time: 81,081 hours, 13,032 cycles
Engine: Pwa PW4060
System (JASC): 2697 · Fire Protection System Wiring
Part: Connector
Condition: Dirty
Location: Fire Warning
Stage of operation: IN
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

FIRE WARNING ON NR 1 ENGINE FIRE SWITCH, AND FUEL SOV ILLUMINATED WITH INTERMITTENT FIRE WARNING BELL. BELL SOUNDS FOR 10 SECONDS, STOPS, THEN REPEATS AGAIN. ALSO HAVE LEFT ENG LOOP 1 AND LOOP 2 STS MSGS DISPLAYED AT THE SAME TIME. REMOVED FIRE-OVHT TEST PANEL M10445 AND CLEANED THE TWO ELECTRICAL CONNECTORS WITH CONTACT SPRAY. CYCLED CIRCUIT BREAKERS 11K30 11B20 AND 11B21. PERFORMED ENG-APU-CARGO FIRE TEST. FAULT CLEARED. TESTS GOOD.