SDR AALA202507316019

Service difficulty report · Smoke Detector · Boeing 737823

Difficulty date: July 25, 2025
Submitted: July 31, 2025
Operation: Air carrier
Aircraft: N967AN
Make and model: Boeing 737823
Aircraft serial: 29545
Aircraft time: 68,562 hours, 29,049 cycles
System (JASC): 2611 · Smoke Detection
Part: Smoke Detector
Part number: 4735975
Condition: False Indication
Location: Zone 100 - Fuse
Stage of operation: NR
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

AIRCRAFT WAS GROUNDED: FORWARD CARGO FIRE LIGHT ILLUMINATED ON THE GROUND. FIRE WARNING BELL SOUNDED AND THE CARGO FIRE BOTTLE DISCHARGED. REMOVED AND REPLACED CARGO FIRE EXTINGUISHING BOTTLE (AALA202507315282), PER AMM 26-23-01. ALSO REMOVED AND REPLACED CARGO FIRE CONTROL UNIT (AALA202507316361), PER AMM 26-16-02, ALSO, REMOVED AND REPLACED ALL 4 FORWARD CARGO SMOKE DETECTOR (AALA202507314614), (AALA202507312870), (AALA202507317070), (AALA202507316019), PER AMM 26-16-01. OPERATIONAL CHECK GOOD.