SDR 96ZZZX2367

Service difficulty report · Bearing · Agusta A109A2

Difficulty date
March 19, 1996
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N8WH
Make and model
Agusta A109A2
Aircraft serial
7256
Engine
Allsn 250C20B
Part
Bearing
Part number
6859435
Condition
Failed
Location
Gearbox
Part time
266 hours
Stage of operation
NR
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CHIP LIGHT ILLUMINATED IN-FLIGHT. SHORTLY THEREAFTER, ENGINE FAILED. MAINTENANCE FOUND THE BEARINGS ON EITHER END OF THE FUEL CONTROL AND OIL PUMP SPUR GEARSHAFT FELL APART STOPPING FUEL CONTROL OPERATION. EXACT CAUSE UNKNOWN AT THIS TIME. UNUSUAL BECAUSE SHAFT IS SUPPORTED ON BOTH ENDS. SUSPECT ONE BEARING FAILED ALLOWING SHAFT TO WOBBLE AND DESTROY SECOND BEARING.