Service difficulty report · Adapter

Difficulty date
May 2, 2000
Submitted
January 19, 2001
Operation
General aviation
Engine
Allsn 250C20B
Part
Adapter
Part number
689784
Condition
Damaged
Location
Outer Spline
Part time
323 hours
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) EXCESSIVE DAMAGE TO SPLINES OF ADAPTER AND INNER SPLINES OF THE COMPRESSOR TO TURBINE COUPLING SHAFT. IN SOME CASEA SPLINE TOOTH IS COMPLETELY SHEARED OFF.