Service difficulty report · Bearing · Boeing 737322

Difficulty date
August 4, 2008
Submitted
August 12, 2008
Operation
Air carrier
Aircraft
N381UA
Make and model
Boeing 737322
Aircraft serial
24656
Aircraft time
51,876 hours, 36,357 cycles
Engine
Cfmint CFM563C1
Engine time
51,629 hours, 30,242 cycles
Part
Bearing
Part number
1461M14P04
Part serial
MDAMC471
Condition
Seized
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
R, Y, J
Precautionary procedure
A

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

What was found

NR 1 ENGINE FAILURE. RTFL. ENG 1 STALLED AT 1,000' FOR 5 SEC, ENG SEIZED, OIL PRESS & N1 DROPPED TO ZERO, COMPLETED ENG SHUTDOWN. PROCEDURE, FLT AIRBORNE FOR 11 MIN, SMOKE IN CABIN, BLEEDS SHUTOFF WHICH CLEARED SMOKE, EMERGENCY DECLARED. NO EXCEEDANCE REPORTED, UPON ARRIVAL FOUND OIL DRIPPING FROM 7'0 CLK DRAIN HOLE AT TURB EXHAUST, UNABLE TO SEE OIL LEVEL IN TANK, FLT DECK ENG 1 OIL QTY IND READ 36, ENG 2 AT 100. SPINNER & TAIL PIPE HAVE NO EVIDENCE OF OIL LEAK. FBO REPORTS FORWARD SUMP SCAVENGE CHIP DETECTOR (MIDDLE MAGNETIC C-D) IS FULL OF METAL. THE ENGINE WAS REPLACED. NO ADDITIONAL FINDINGS DATA IS EXPECTED DUE TO RETIREMENT OF THE FLEET. FOUND FAILURE OF NR 3 BEARING.