SDR SWAA2026072805125

Service difficulty report · Fire Detector · Boeing 7377H4

Difficulty date: July 24, 2026
Submitted: July 29, 2026
Operation: Air carrier
Aircraft: N901WN
Make and model: Boeing 7377H4
Aircraft serial: 32545
Aircraft time: 60,427 hours, 35,273 cycles
System (JASC): 2612 · Fire Detection
Part: Fire Detector
Part number: 902862
Part serial: 4685
Condition: False Activation
Location: Zone 400
Stage of operation: TX
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

NR 2 ENGINE OVERHEAT LIGHT ILLUMINATED ON START. R & R NR 2 ENGINE FAN UPPER DETECTOR FIRE, ENGINE FAN LOWER DETECTOR FIRE, ENGINE CORE RT FIRE DETECTOR, AND ENGINE CORE LT FIRE DETECTOR IAW AMM 26-11-01. PREFORMED NR 2 ENGINE IDLE RUN, ENGINE RUN GOOD, NO FAULTS OR INDICATIONS FOUND. ENGINE RUN NORMAL IAW AMM 71-00-00.

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