SDR SWAA2022121982839

Service difficulty report · Fire Detector · Boeing 7377H4

Difficulty date: December 17, 2022
Submitted: December 19, 2022
Operation: Air carrier
Aircraft: N427WN
Make and model: Boeing 7377H4
Aircraft serial: 29831
Aircraft time: 68,701 hours, 40,551 cycles
System (JASC): 2612 · Fire Detection
Part: Fire Detector
Condition: False Activation
Location: Mlg Ww
Stage of operation: DE
How discovered: O
Nature of condition: N
Precautionary procedure: A

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

What was found

ON DESCENT, WHEEL WELL FIRE WARNING ILLUMINATED. AFTER QRH CHECKLIST, LIGHT REMAINED ILLUMINATED. TRIED A NEW WHEEL WELL OVERHEAT DETECTION BOX; NO HELP; FAULT CODE 84, WHEEL WELL STILL SHOWS. REMOVED AND REPLACED WHEEL WELL FIRE DETECTOR ELEMENT IAW AMM 26-18-02. OPS CHECKED GOOD.

More about the Boeing 737-7H4