Service difficulty report · Diffuser

Difficulty date
December 20, 2005
Submitted
December 20, 2005
Operation
General aviation
Engine
Allsn 250C30P
Engine time
8,206 hours, 23,361 cycles
Part
Diffuser
Part number
E23051119
Part serial
DX13073
Condition
Separated
Location
Compressor
Part time
449 hours, 863 cycles
Component
Compressor · Allsn · C30P
Component part number
23005250
Stage of operation
NR
How discovered
O
Nature of condition
R
Precautionary procedure
O

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

What was found

COMPRESSOR REPORTED STALLING. VERIFIED ON TEST CELL. UPON DISASSEMBLY DIFFUSER VANE RING WAS FOUND TO HAVE THE AFT STUD BAND (RING) SEPARATED FROM THE DIFFUSER ASSEMBLY BODY. DIFFUSER INSTALLED NEW AT LAST OVERHAUL 449.3 HOURS PRIOR.