Service difficulty report · Bearing · Bolkms BK117A4

Difficulty date
April 9, 2001
Submitted
May 11, 2001
Operation
General aviation
Make and model
Bolkms BK117A4
Engine
Lyc LTS101650B1
Part
Bearing
Part number
BB1B649781A
Condition
Rough
Location
Tail Rotor Drive
Part time
4,574 hours
Component
Tail Rotor Drive · 11731521
Stage of operation
IN
How discovered
O
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) HEARD CLICKING NOISE DURING DAILY INSPECTION WHILE TURNING MAIN ROTOR.DISCOVERED ROUGH NR 3 TAIL ROTOR DRIVESHAFT BEARING, BEARING CAUSED RUBBER SLEEVE ON SHAFT TO SPIN. DAMAGE TO SHAFT BEYONG LIMITS. SUSPECT INTERNAL CORROSION DUE TO HISTORY OF THIS PART SITTING IN STORAGE FOR A LONG TIME.