Service difficulty report · Compressor · Boeing 747422

Difficulty date
August 11, 2001
Submitted
September 5, 2001
Operation
Air carrier
Aircraft
N182UA
Make and model
Boeing 747422
Aircraft serial
25279
Aircraft time
46,100 hours, 5,634 cycles
Engine
Pwa PW4056
Engine time
36,741 hours, 4,416 cycles
Part
Compressor
Part serial
B27354
Condition
Surges
Location
Nr 3 Engine
Part time
15,987 hours, 2,026 cycles
Stage of operation
TO
How discovered
O
Nature of condition
R, A, J
Precautionary procedure
C, E

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

What was found

NR 3 ENGINE STALLED ON TAKE OFF, FLAMES REPORTED OUT TAILPIPE, EGT OVER TEMPTED OVER 820 DEGREES FOR 15 SECONDS, PEAK EGT 848 DEGREES. CREW WRITE-UP, ENGINE FIRE WARNING NR 3 ENGINE ON TAKE OFF. ENGINE FIRE-DAMAGE CHECKLIST ACCOMPLISHED. TOWER OBSERVED SLIGHT FLAME OUT TAIL PIPE ON TAKE OFF. EXTINGUISHED AFTER SHUTDOWN. THE ENGINE HAD A GROUP 3 SURGE ON TAKEOFF. NO INDICATION OF ENGINE FIRE. SOME TORCHING FROM TAILPIPE DURING SURGE.GROUP 3 SURGES ARE BEING MANAGED PER AD 2001-15-12