SDR DALA2016091606714

Service difficulty report · Rotor · Boeing 7572Q8

Difficulty date: September 14, 2016
Submitted: September 19, 2016
Operation: Air carrier
Aircraft: N702TW
Make and model: Boeing 7572Q8
Aircraft serial: 28162
Aircraft time: 70,211 hours, 19,897 cycles
Engine: Pwa PW2037
Engine time: 64,388 hours, 17,805 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Rotor
Condition: Coked
Location: Engine
Stage of operation: CR
How discovered: O
Nature of condition: R, X
Precautionary procedure: A

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

What was found

WHILE IN CRUISE, CREW REPORTED HEARING LOUD BANG, FOLLOWED BY ENGINE ROLLBACK AND SHUTDOWN. ACFT DIVERTED. CREW DECLARED AN EMERGENCY. MAINTENANCE FOUND PMA ROTOR AND STATOR COKED WITH OIL AND SCORED. PMA STATOR, ROTOR, AND CARBON SEAL WERE REPLACED. TREND DATA GOOD.

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