Service difficulty report · Engine · Boeing 7377H4

Difficulty date
November 29, 2012
Submitted
December 4, 2012
Operation
Air carrier
Aircraft
N422WN
Make and model
Boeing 7377H4
Aircraft serial
29826
Aircraft time
38,590 hours, 22,252 cycles
Engine
Cfmint CFM567B22
Engine time
12,633 hours, 7,493 cycles
Part
Engine
Part number
CFM567B24622
Part serial
889219
Condition
Overspeed
Location
Nr 1
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

NR 1 ENGINE OVERSPEED ON CLIMBOUT APPROX 108.6 AUTOTHROTTLES WERE ENGAGED. REMOVED AND REPLACED NR 1 ENGINE IAW MT 771-00-01 OPS NORMAL IAW AMM POS 1 P/N OFF CFM56-7B24 S/N OFF 889219 P/N ON CFM56-7B24G22 S/N ON 892369.

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