Service difficulty report · Turbine

Difficulty date
November 30, 2000
Submitted
January 29, 2001
Operation
General aviation
Engine
Allsn 250B17F2
Part
Turbine
Condition
Misdrilled
Location
Engine
Component
Turbine
Component part number
23033383
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

DURING REASSEMBLY OF THE TURBINE AFTER REPAIR, THE ANTIROTATION PIN WAS FOUND TO BE LOOSE. UPON REMOVAL, FOUND BURRS AT THE BASE OF THE PIN, CAUSED BY THE PIN BEING PRESSED INTO TOO SMALL A HOLE. MEASUREMENT OF THE PIN HOLE FOUND IT TO BE 0.002 TO 0.003 BELOW THE PRINT LIMIT.