Service difficulty report · Pin · Bolkms BO105S

Difficulty date
June 9, 2005
Submitted
July 11, 2005
Operation
General aviation
Make and model
Bolkms BO105S
Aircraft time
7,587 hours
Engine
Allsn 250C20B
Part
Pin
Part number
11213152112
Condition
Cracked
Location
T/R Drive
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) WHEN REMOVING THE REAR FLANGE ON THE LONG TAIL ROTOR DRIVE SHAFT FOR REPLACEMENT OF THE BEARING SLEEVES, TWO OF THE THREE SILVER PLATED SPRING PINS WERE FOUND CRACKED. ONE WAS CRACKED ALONG IT S FULL LENGTH, THE OTHER EXTENDED FROM THE BEVELED END OF THE PIN ABOUT 80 PERCENT OF IT S LENGTH. BOTH CRACKS WERE LOCATED OPPOSITE THE SPRING PIN OPENING.