Service difficulty report · Clamp · Bolkms BO105S

Difficulty date
April 16, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Bolkms BO105S
Aircraft time
10,130 hours
Part
Clamp
Part number
4638305029
Condition
Broken
Location
Swashplate
Stage of operation
IN
How discovered
9
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) DURING A MAIN TRANSMISSION CHANGE THE ENGINEER REMOVED THE BELLOWS, PN 105-10113.05, UPPER SWASHPLATE BOOT, TO REINSTALL ON THE REPLACEMENT TRANSMISSION. WITH THE BOOT REMOVED, THE ENGINEER NOTICED DEBRIS ON THE UPPER SURFACE OF THE SWASHPLATE. LOOKING FURTHER, THE ENGINEER DISCOVERED THAT THE CLAMP, PN 4638305029 HAD FAILED AND FALLEN DOWN INTO THE SWASHPLATE. THE BOLT FOR THE CLAMP WAS FOUND IN THE LOWER SECTION OF THE SWASHPLATE, CAUGHT IN THE LOWER BELLOWS. THE CLAMP ITSELF WAS FOUND TWISTED AND ENTWINED IN THE SWASHPLATE ASSEMBLY.