Service difficulty report · Nozzle

Difficulty date
July 18, 1998
Submitted
March 26, 2000
Operation
General aviation
Engine
Allsn 250C20
Part
Nozzle
Part number
6878426
Condition
Cracked
Location
2nd Stage
Component
6898734
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

(CAN) INSPECTION FOUND CIRCUMFERENCE CRACKS ON THE OUTER BAND OF THE NOZZLE ASSEMBLY. NOZZLE WAS CRACKED APPROXIMATELY 75 PERCENT OF THE OUTER CIRCUMFERENCE WHERE THE OUTER BAND WAS REPLACED DURING LAST OVERHAUL. FAULT WAS FOUND DURING REPAIR OF 1ST STAGE TURBINE WHEEL. PART TC: 466.