SDR 0101375534

Service difficulty report · Fire Detector · Boeing 757251

Difficulty date: April 13, 2001
Submitted: April 20, 2001
Operation: Air carrier
Aircraft: N534US
Make and model: Boeing 757251
Aircraft serial: 24265
Aircraft time: 42,763 hours, 17,873 cycles
System (JASC): 2612 · Fire Detection
Part: Fire Detector
Condition: Malfunctioned
Location: Lt Engine
Stage of operation: TX
How discovered: O
Nature of condition: N
Precautionary procedure: F

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

What was found

ON ENGINE START, THE LEFT ENGINE FIRE WARNING OCCURRED. WARNINGS STOPPED AFTER FIRE SWITCH WAS PULLED AND ONE BOTTLE DISCHARGED. MAINTENANCE CHECKED ENGINE, DUCTING, AND FUEL AND OIL LINES FOR EVIDENCE OF FIRE WITH NONE FOUND. REPLACED THE NR 1, 2, 3, AND 4 LEFT ENGINE FIRE DETECTORS. ALSO REPLACED THE LEFT ENGINE LOOP 2 DETECTOR CARD M681, THE NR 1 AFOLTS FIRE DETECTION SYSTEM CARD M10224, AND THE NR 1 FIRE EXTINGUISHER BOTTLE. OPERATIONAL CHECK NORMAL.