Service difficulty report · Bearing · Bell 407

Difficulty date
March 28, 2016
Submitted
March 28, 2016
Operation
General aviation
Aircraft
N410PH
Make and model
Bell 407
Aircraft serial
53636
Aircraft time
10,441 hours
Engine
Allsn 250C47B
Engine time
11,888 hours
Part
Bearing
Part number
M25010106
Part serial
NWC140200
Condition
Spalled
Location
Nr 5
Part time
877 hours
Component
Turbine
Component part number
M25010557
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 2-22-16, DUE TO TURBINE O/H. NR 5 BEARING EXHIBITED SPALLING OF OUTER RACE AT SPLIT. REPLACED NR 5 BEARING DUE TO SPALLING.

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