SDR AALA202109107843

Service difficulty report · Engine · Boeing 737823

Difficulty date: September 7, 2021
Submitted: September 10, 2021
Operation: Air carrier
Aircraft: N838NN
Make and model: Boeing 737823
Aircraft serial: 31097
Aircraft time: 33,602 hours, 13,928 cycles
Engine: Cfmint CFM567B242
Engine time: 34,624 hours, 14,070 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Deteriorated
Location: Left
Stage of operation: CL
How discovered: O
Nature of condition: M, J
Precautionary procedure: B, A

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

What was found

AIRCRAFT WAS GROUNDED: ON TAKEOFF LEFT ENGINE EXHAUST GAS TEMPERATURE DISPLAY TURNED RED. HIGHEST OBSERVED TEMPERATURE WAS 962 DEGREES. AFTER 1 MINUTE TEMPERATURE RETURNED TO NORMAL AFTER RETARDING THROTTLE. FLIGHT DECLARED EMERGENCY AND LANDED OVERWEIGHT. LANDED WITHOUT SHUTTING DOWN ENGINE. CAUSE FOR EXHAUST GAS TEMPERATURE OVERTEMP IS ENGINE DETERIORATION. IT IS THE 4TH REPORTED EXHAUST GAS TEMPERATURE OCCURRENCE. **SUPPLEMENTAL REPORT REQUIRED** (OPEN)