Service difficulty report · Compressor · Boeing 757222

Difficulty date
October 28, 2009
Submitted
July 9, 2010
Operation
Air carrier
Aircraft
N574UA
Make and model
Boeing 757222
Aircraft serial
26686
Aircraft time
56,413 hours, 20,759 cycles
Engine
Pwa PW2037
Engine time
52,317 hours, 18,826 cycles
Part
Compressor
Condition
Stalled
Location
Rt Engine
Stage of operation
CL
How discovered
O
Nature of condition
A, R
Precautionary procedure
O

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

What was found

LOUD COMPRESSOR STALL RT ENGINE JUST AFTER LIFT-FIREBALL REPORTED BY PASSENGERS, LOOKS OK NOW. *S/D* DEFINITE YAW WITH COMPRESSOR STALL-JUST ONE NOISE-THEN ENG CLEARED ITSELF. PERFORMED FIM TASK'S. NO EPCS MSG'S AND BOROSCOPE OF AP2 AND AP8 PORTS REVEALED NO LIMITING DEFECTS. NO EGT EXCEEDENCE. LEAK CHECKS OK. FOUND EVIDENCE OF BIRD STRIKE AT MID SPAN SHROUD, NO EVIDENCE OF BIRD INGESTION THROUGH GAS PATH. ENGINE NEEDS ACCELERATION CHECK FROM MIN IDLE TO 80 PERCENT WITH 10-15 SEC FULL LEVER TRAVERSE. ACCMP'D ACCEL RUN. ENGINE OKAY FOR SERVICE.