Service difficulty report · Retaining Ring · Bell 407

Difficulty date
August 13, 2018
Submitted
August 14, 2018
Operation
Air carrier
Filed by
HEER617E
PHI Aviation, LLC
Aircraft
N473PH
Make and model
Bell 407
Aircraft serial
54648
Aircraft time
384 hours
Engine
Allsn 250C47B
Engine time
384 hours
Part
Retaining Ring
Part number
6748072283
Condition
Broken
Location
Nr 2 Bearing
Part time
384 hours
Component
Compressor
Component part number
M25010559
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 DUE TO METAL IN THE OIL. THE NR 2 BEARING RETAINING RING WAS BROKEN WITH A PIECE MISSING.

More about the Bell 407