Service difficulty report · Casting · Boeing 737201

Difficulty date
July 31, 2007
Submitted
August 6, 2007
Operation
Air carrier
Aircraft
N245US
Make and model
Boeing 737201
Aircraft serial
22751
Aircraft time
50,989 hours, 38,893 cycles
Engine
Pwa JT8D15
Engine time
52,836 hours, 40,325 cycles
Part
Casting
Part number
633758
Condition
Broken
Location
Zone 600
Stage of operation
CL
How discovered
O
Nature of condition
E, M, J
Precautionary procedure
E, A

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

What was found

DURING TAKEOFF, AT APPROXIMATELY 300 FEET, CREW EXPERIENCED NR 2 ENGINE COMPRESSOR STALL WITH RAPIDLY RISING EGT. SHUTDOWN NR 2 ENGINE AND MADE UNEVENTFUL LANDING AT DEPARTURE AIRPORT. INSPECTION REVEALED THE NOSE DOME HAD SEPARATED FROM ITS MOUNT DAMAGING THE ENGINE INLET COWL AND C1 COMPRESSOR BLADES. THE FRONT ACCESSORY DRIVE CASTING, NOSE DOME MOUNTING LUG AT THE 2:00 POSITION HAD SEPARATED FROM THE CASTING AND WAS MISSING, PRESUMED INGESTED BY THE ENGINE. THERE IS ALSO EVIDENCE OF FOD FURTHER DOWN THE COMPRESSOR AS WELL AS IN THE ENGINE EXHAUST TAILPIPE. REPLACED NR 2 ENGINE AND ASSOCIATED INLET COWLING.