SDR UALA2009042001135

Service difficulty report · Compressor · Boeing 757222

Difficulty date: April 18, 2009
Submitted: April 22, 2009
Operation: Air carrier
Aircraft: N596UA
Make and model: Boeing 757222
Aircraft serial: 28749
Aircraft time: 44,349 hours, 12,290 cycles
Engine: Pwa PW2037
Engine time: 49,781 hours, 17,377 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Compressor
Condition: Stalled
Location: Nr 1 Engine
Part time: 49,781 hours, 17,377 cycles
Stage of operation: IN
How discovered: O
Nature of condition: R
Precautionary procedure: E

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

What was found

NR 1 ENGINE COMPRESSOR STALL ON ENGINE RUNUP, ENGINE SHUT DOWN, PER CREW. SAMC FLETCH PROG TEXT: - ITEM ROLLED FORWARD. SAMC TEXT: COMPRESSOR STALL AT APPROX 40 PERCENT, SHUTDOWN, PER CREW. INSPECTED ENGINE UNISON RINGS, CHIP DETECTORS AND BOROSCOPED FOR FOD INGESTION (SNOW SLUDGE) LPC AND HPC NO DEFECTS FOUND. RAN ENGINE TO CRUISE POWER WITHOUT INCIDENT.