Service difficulty report · Spline · Bolkms BK117A4

Difficulty date
November 1, 2011
Submitted
September 14, 2015
Operation
General aviation
Make and model
Bolkms BK117A4
Aircraft time
12,579 hours
Engine
Lyc LTS101650B1
Part
Spline
Part number
2542373
Condition
Broken
Location
Governor
Component
Governor · Honeywell · 2549102
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

(CAN) THE GOVERNOR WAS REMOVED FOR SPOOL BEARING CHANGE IAW SB LTS101-73-20-0262 & THE REPAIR SHOP DISCOVERED THE BROKEN DRIVE SPLINE. THIS WOULD NOT HAVE BEEN VISIBLE ON REMOVAL BECAUSE THE BITS ARE HELD IN WITH THE SPRING.