Service difficulty report · Compressor Wheel

Difficulty date
February 16, 2001
Submitted
May 4, 2001
Operation
General aviation
Engine
Pwa JT8D9A
Part
Compressor Wheel
Part number
787008
Part serial
N89991
Condition
Cracked
Location
8th Stage
Part time
26,811 hours, 15,510 cycles
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

AFTER ENGINE DISASSEMBLE, DURING INSPECTION ON EIGHTH STAGE DISK, A CRACK WAS DETECTED IN ONE OF THE TIE ROD HOLES. CRACK EXTENDED RADIALLY OUTBOARD FROM THE HOLE TO DEPTH OF 0.35 IN., DUE TO OXIDATION AND HEAVY CORROSION. IN ORDER TO HAVE MORE INFORMATION, PART WAS SENT TO OEM FOR EVALUATION. PART WILL BE LOCALLY SCRAPPED.