SDR CA081127007

Service difficulty report · Shaft · Skrsky S76

Difficulty date: July 8, 2008
Submitted: December 18, 2008
Operation: General aviation
Make and model: Skrsky S76
System (JASC): 6320 · Main Rotor Gearbox
Part: Shaft
Part number: 7635109626
Condition: Corroded
Location: M/R Gearbox
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

(CAN) MGB PN:76351-09600-044 SN:A231-00044 IN FOR OVERHAUL. FOLLOWING CLEANING AND INSP OF NEW SPLINE SHAFT, CORROSION WAS FOUND AT INNER AND OUTER SPLINES. ALL REMAINING SPLINES SHAFTS (QTY:6) PULLED FROM STOCK AND INSPECTED, NO EVIDENCE OF CORROSION FOUND. CORROSION PITTING FOUND ON NEW SPLINE SHAFT PULLED FROM STOCK. RETURN TO VENDOR FOR FULL WARRANTY COMPANY SQID NR 08-05027.