SDR 97ZZZX4431

Service difficulty report · Wheel Blades · Skrsky S76A

Difficulty date: June 5, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N768AL
Make and model: Skrsky S76A
Aircraft serial: 760031
Engine: Allsn 250C30S
System (JASC): 7250 · Turbine Section
Part: Wheel Blades
Part number: 23053299
Condition: Broken
Location: Gp Sect 1st Stg
Part time: 1,648 hours
Component: 23035128
Stage of operation: IN
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

TURBINE ASSEMBLY WAS RECEIVED WITH ENGINE ASSEMBLY DUE TO MAKING METAL. UPON INSPECTION OF G.P. SECTION, FOUND SULFIDATION ON 1ST STAGE WHEEL. 1ST STAGE WHEEL: PN 23053299, SN X-138702, TT 1,348.1 HOURS, TC 1,697. SCRAPPED DUE TO MISSING BROKEN AND CRACKED BLADES CAUSED BY SULFURDATION.