SDR AALA202202143371

Service difficulty report · Detector · Boeing 737*

Difficulty date: February 11, 2022
Submitted: February 14, 2022
Operation: Air carrier
Aircraft: N941NN
Make and model: Boeing 737*
Aircraft serial: 33232
Aircraft time: 24,661 hours, 9,480 cycles
System (JASC): 2613 · Overheat Detection
Part: Detector
Condition: Out Of Tolerance
Location: Zone 500 - Lh Wi
Stage of operation: CR
How discovered: V
Nature of condition: J, M
Precautionary procedure: A

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

What was found

AIRCRAFT WAS GROUNDED: LEFT WING OVERHEAT LIGHT ILLUMINATED DURING FLIGHT. PILOT DID NOT HAVE WING ANTI ICE ON. THE ENGINE ANTI ICE WAS ON. FOLLOWING THE CHECKLIST ISOLATED THE LEFT WING OVERHEAT. ISOLATED THE LEFT WING OVERHEAT AFTER APPROXIMATELY 5 MINUTES THE WING OVERHEAT WENT OFF. EMERGENCY WAS DECLARED AND RETURNED TO CLT. AIRCRAFT WAS OVERWEIGHT FOR LANDING. LEFT FORWARD STRUT CAVITY DETECTOR M1761 REPLACED FOR LOW INSULATION RESISTANCE PER AMM 26-18-02.