SDR CA001012012

Service difficulty report · O-Ring · Skrsky S61N

Difficulty date: September 21, 2000
Submitted: January 22, 2001
Operation: General aviation
Make and model: Skrsky S61N
Aircraft time: 21,418 hours
Engine: Ge CT581401
System (JASC): 6310 · Engine/Transmission Coupling
Part: O-Ring
Condition: Leaking
Location: Input Coupling
Stage of operation: IN
How discovered: V
Nature of condition: K
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) WE HAVE HAD 5 CASES OF UNACCEPTABLE GREASE LEAKAGE RATES FROM THE INPUT COUPLINGS.WHEN THE COUPLINGS WERE DISASSEMBLED THE O-RING P/N M83248-1-132 WAS FOUND TO BE EITHER FLAT OR DETERIORATED. ACRO (LANGLEY) TOLD ME THAT THEY DID A HARDNESS TEST ON THEIR BATCH OF O-RINGS AND FOUND THAT THEY FAILED. ATTACHED TO THIS REPORT YOU WIL FIND A COPY OF THE LOT NUMBER OF THE O-RINGS IN QUESTION.