Service difficulty report · Engine · Boeing 737490

Difficulty date
October 4, 2004
Submitted
December 7, 2004
Operation
Air carrier
Aircraft
N709AS
Make and model
Boeing 737490
Aircraft serial
28896
Aircraft time
19,842 hours, 10,784 cycles
Engine
Cfmint CFM563C1
Part
Engine
Part number
CFM563C1
Part serial
857115
Condition
Failed
Location
Nr 1 Engine
Part time
40,142 hours, 23,444 cycles
Stage of operation
CR
How discovered
O
Nature of condition
E, M
Precautionary procedure
E, A

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

What was found

ENROUTE, AT 35,000 FT, APPROX .75 PWR, NR 1 ENG INDICATIONS BECAME ERRATIC (NO EXCESSIVE VIBRATION INDICATED ON VIB METER). F/A HEARD LOUD BANG JUST BEFORE FLT CREW HEAR A THUD. IN A FEW SECONDS, ENG OVERTEMPED (APPROX 982 DEGREES C) PERFORMED EMERGENCY SHUTDOWN AND DID NOT FIRE BOTTLES. ACCOMPLISHED SINGLE ENG LANDING. REMOVED AND REPLACED ENGINE.