Service difficulty report · Fire Detector · Boeing 737824

Difficulty date
September 23, 2026
Submitted
September 25, 2026
Operation
Air carrier
Aircraft
N77296
Make and model
Boeing 737824
Aircraft serial
34002
Aircraft time
60,206 hours, 22,195 cycles
Part
Fire Detector
Condition
False Activation
Location
Zone 100
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
B, F, A

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

What was found

AFT CARGO FIRE AT FL350. RAN QRC AND NNC. BELL WENT OFF 10-12 TI MES EVEN AFTER DISCHARGE. PERFORMED CEU BITE PROCEDURE IAW FIM 26-16 TASK 801. NO FAULTS NOTED. PLACING AFT LOWER CARGO COMPARTMENT FIRE DETECTION/SUPPRESSION SYSTEM ON MEL 2619C AS A PRECAUTION. REPLACED ALL AFT CARGO SMOKE DETECTORS AS A PRECAUTION. ALL INSTALLATION AND BITE TESTS GOOD. MEL REMOVED. DDP CW.