SDR 20010420CW001

Service difficulty report · Compressor

Difficulty date: February 21, 2001
Submitted: April 20, 2001
Operation: General aviation
Engine: Pwa JT8D9A
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Compressor
Condition: Damaged
Location: Engine
Part time: 48,961 hours, 45,331 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

ENGINE WAS RECEIVED AT ENGINE SHOP FOR REPAIR DUE TO SUSPECTED OIL LEAK AS REPORTED BY THE CUSTOMER. DURING THE DISASSEMBLY OF THE HIGH COMPRESSOR MODULE, IT WAS DISCOVERED THAT THE COMPRESSOR DISKS STAGES NUMBER 8 AND 9 EXHIBITED A MELTING CONDITION DUE TO AN EXTREMELY HIGH HEAT EXPOSURE. THE C9 STAGE DISK BORE WAS MELTED COMPLETELY AND ROLLED OUT OF POSITION.