Service difficulty report · Compressor

Difficulty date
September 8, 2011
Submitted
January 23, 2013
Operation
General aviation
Engine
Allsn 250C20
Part
Compressor
Condition
Failed
Location
Engine
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

(CAN) THE OPERATOR HAD A COMPLAINT OF LOW POWER. UPON DISMANTLE OF THE COMPRESSOR THE FOLLOWING CONDITIONS WERE FOUND. COMPRESSOR CASE CORRODED, MISSING PLASTIC AND CRACKED PLASTIC. 1ST STAGE COMPRESSOR WHEEL, CHAMFER BLEND BEYOND LIMITS. 2ND/3RD STAGE COMPRESSOR WHEEL, CHAMFER BLEND BEYOND LIMITS. 5TH STAGE COMPRESSOR WHEEL, BENT BLADES AND CHAMFER BLEND BEYOND LIMITS, 6TH STAGE COMPRESSOR WHEEL CHORD WIDTH BELOW MINIMUM LIMITS. THE PAPERWORK INDICATED THE COMPRESSOR HAD JUST -0.9 HOURS AND 1 CYCLE SINCE O/H.