SDR AU960154

Service difficulty report · Bearing · Snias AS350B

Difficulty date
February 5, 1996
Submitted
March 26, 2000
Operation
General aviation
Make and model
Snias AS350B
Engine
Tmeca
Part
Bearing
Part number
47896WVC47820X
Condition
Failed
Location
M/R Mast/Swashpl
Component
Aerosp · MAINMAST
Stage of operation
IN
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

(AUS) MAIN ROTOR MAST BEARING FAILED - EVIDENCE OF EXTENSIVE PITTING AND BRINNELLING WITH CORROSION ALSO PRESENT - SUSPECT CORROSIONINITIATED BY CONDENSATION - AIRCRAFT IS IDLE FOR LONG PERIODS OF TIME - METAL CONTAMINATION OF MAIN TRANSMISSION