Service difficulty report · Bearing · Bell 407

Difficulty date
February 23, 2017
Submitted
February 23, 2017
Operation
Air carrier
Aircraft
N13MX
Make and model
Bell 407
Aircraft serial
54326
Aircraft time
670 hours
Engine
Allsn 250C47B
Engine time
670 hours
Part
Bearing
Part number
M25010106
Part serial
NWK121330
Condition
Spalled
Location
Nr 5
Part time
653 hours
Component
Turbine
Component part number
23063354
Stage of operation
IN
How discovered
V
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

ENGINE REMOVED TO REPLACE THE NR 5 BEARING AND COMPLY WITH CEB 72-6068 REV. 2. THE NR 5 BEARING WAS REMOVED DUE TO SPALLING ON OUTER RACE. REPLACED WITH NEW BEARING.

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