SDR UIEA2017020700156

Service difficulty report · Compressor · Boeing 74747UF

Difficulty date: February 7, 2017
Submitted: February 10, 2017
Operation: Air carrier
Aircraft: N477MC
Make and model: Boeing 74747UF
Aircraft serial: 29255
Aircraft time: 74,083 hours, 13,327 cycles
Engine: Ge CF680
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Compressor
Condition: Stalled
Location: Lt Engine
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 A LT ENGINE COMPRESSOR STALL, NO ENGINE INDICATIONS DISPLAYED. INSPECTED EXHAUST FOR FOD, BOROSCOPED HPC STAGE 1, 6, AND 12 AND HPT STAGE 1 ALC IAW AMM 72.00.00. REMOVED AND INSTALLED BOROSCOPE PLUGS AND N2 DRIVE PAD IAW AMM 72.00.00 INSPECTED.

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