Service difficulty report · Spherical Stop · Aerosp AS355*

Difficulty date
October 16, 2012
Submitted
September 14, 2015
Operation
General aviation
Make and model
Aerosp AS355*
Engine
Tmeca ARRIEL1D1
Part
Spherical Stop
Part number
57910700
Condition
Failed
Location
Main Rotor
Part time
2,871 hours
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 REGULAR DAILY VISUAL INSPECTION OF THE PART IT WAS DISCOVERED THAT THE ELASTOMER WAS EXTRUDING BETWEEN THE RUBBER AND THE SMALL STRUCTURAL PIECE OF THE PART. THE LIFE LIMIT OF THIS PART IS 6400 HRS BUT DUE TO PREMATURE FAILURE OF THE ELASTOMER IT IS REQUIRED IAW THE MM THAT THE PART MUST BE REPLACED AND THE ASSY BEFORE THE PART EVEN REACHED HALF OF THE PROPOSED LIFE LIMIT.