Service difficulty report · Impeller

Difficulty date
August 14, 2009
Submitted
August 21, 2009
Operation
General aviation
Engine
Allsn 250C20B
Part
Impeller
Part number
23058147
Part serial
KR113608
Condition
Cracked
Location
Compessor
Component
Compessor · Rroyce
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

COMPRESSOR WAS RECEIVED TO REPAIR FOR DAMAGE TO ROTOR. UPON DISASSEMBLY AND INSP, DISCOVERED THAT A SECTION OF SHROUD BETWEEN THE NR 2 VANES AT THE FWD END OF THE IMPELLER (IDENTIFIED AS DIAMETER I) HAD BROKEN OFF. CAUSE COULD NOT BE DETERMINED. HOURS AND CYCLES COULD NOT BE DETERMINED.