SDR UIEA2012042000156

Service difficulty report · Rotor · Boeing 74747UF

Difficulty date: April 20, 2012
Submitted: April 20, 2012
Operation: Air carrier
Aircraft: N492MC
Make and model: Boeing 74747UF
Aircraft serial: 29253
Aircraft time: 58,654 hours, 10,431 cycles
Engine: Ge CF680C2B1F
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Rotor
Condition: Damaged
Location: Compressor
Stage of operation: CL
How discovered: O
Nature of condition: R, J
Precautionary procedure: A

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

What was found

AFTER TAKEOFF, EXPERIENCED COMPRESSOR STALL ON NR 1 ENGINE, FOLLOWED BY 2 MORE COMPRESSOR STALLS. INSPECTION OF ENGINE ACCOMPLISHED IAW AMM 72-00-00. DAMAGE TO STAGE 5 VSV WITH 1 BROKEN, LEVER FOUND. DURING BORESCOPE DAMAGE TO 6TH, 7TH AND 8TH; STAGE COMPRESSOR ROTORS.

More about the Boeing 747-47UF