SDR AUS20030950

Service difficulty report · Fire Loop · Boeing 737376

Difficulty date: September 17, 2003
Submitted: October 15, 2003
Operation: General aviation
Make and model: Boeing 737376
Engine: Ge CFM563B1
System (JASC): 2612 · Fire Detection
Part: Fire Loop
Condition: Faulty
Location: Nr 1 Engine
Stage of operation: CL
How discovered: O
Nature of condition: E, B, J
Precautionary procedure: O

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

What was found

(AUS) NR 1 ENGINE FIRE DETECTION SYSTEM FAULTY. INVESTIGATION FOUND A HIGH RESISTANCE (2000OHMS) SENSOR IN LOOP B'. MEL APPLIED BUT DEFECT OCCURRED DURING NEXT TAKEOFF AND ON SUBSEQUENT FAULT FINDING GROUND RUN. SEE MDR 03/0948 FOR RELATED INCIDENT.