Service difficulty report · Shaft · Bolkms BK117B2

Difficulty date
May 8, 2012
Submitted
November 9, 2012
Operation
General aviation
Aircraft
N955ME
Make and model
Bolkms BK117B2
Aircraft serial
7243
Engine
Lyc LTS101750B1
Part
Shaft
Part number
1176812301
Condition
Failed
Location
Transmission
Component
Oil Cooler
Component part number
1176802101
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

SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.