Service difficulty report · Compressor Wheel · Skrsky S64E

Difficulty date
August 9, 2001
Submitted
October 2, 2001
Operation
Air carrier
Aircraft
N164AC
Make and model
Skrsky S64E
Aircraft serial
64034D
Engine
Pwa JFTD12A4A
Part
Compressor Wheel
Part number
670403
Part serial
M103AA0069
Condition
Cracked
Location
Engine
Part time
3,147 hours
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, PN JFTD12A4A, SN 672491 HAVING A TOTAL TIME OF7090.9 AND A TIME SINCE OVERHAUL OF 3147.9 WAS REMOVED FOR OVERHAUL. DURING INSPECTION, 14 CRACKS WERE DETECTED IN THE 3RD STAGE COMPRESSOR DISK PN670403, SN M103AA0069 BY LIQUID PENETRANT INSPECTION. ALL CRACKS ORIGINATED FROM TIE ROD HOLES AND EXTENDED OUTWARD. THE LONGEST CRACK WAS APPROXIMATELY .322 INCH.