SDR 96ZZZX5449

Service difficulty report · Nozzle Shield

Difficulty date
September 23, 1996
Submitted
March 26, 2000
Operation
General aviation
Engine
Allsn 250C30P
Part
Nozzle Shield
Part number
6892832
Condition
Elongated Holes
Location
3rd Stage
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

UPON DISASSEMBLY OF THE TURBINE FOR REPLACEMENT OF THE FIRST STAGE NOZZLE, FOUND FRETTING WEAR ON THE SHEATHS OF THE TOT HARNESS PROBES, AND ELONGATED HOLES IN THE THIRD STAGE NOZZLE SHIELD WHERE THE PROBES PASS THROUGH. TOT HARNESS REQUIRED REPLACEMENT.