SDR 2006UALA01867

Service difficulty report · Compressor · Boeing 767322

Difficulty date: September 21, 2006
Submitted: October 3, 2006
Operation: Air carrier
Aircraft: N646UA
Make and model: Boeing 767322
Aircraft serial: 25283
Aircraft time: 63,833 hours, 10,444 cycles
Engine: Pwa PW4060
Engine time: 60,161 hours, 8,864 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Compressor
Condition: Stalled
Location: Nr 2 Engine
Stage of operation: NR
How discovered: O
Nature of condition: R, Y, J
Precautionary procedure: O

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

What was found

NR 2 ENG COMPRESSOR STALL IN FLIGHT. ENG RECOVERED AND CONTINUED OPERATING. RECOVERED AND CONTINUED OPERATING. PRIOR TO STALL, ENG POWER WAS DECELERATING. ACCOMPLISHED BOROSCOPE OF NR 2 ENGINE, REPLACED ELECTRONIC ENGINE CONTROL, REPLACED IPCV VALVE, HPSOV, HIGH PRESSURE CONTROLLER. POST REPAIR RUNS AND OPS CHECKS WERE GOOD.