Service difficulty report · Seal · Skrsky S76A

Difficulty date
July 21, 2003
Submitted
August 18, 2003
Operation
General aviation
Make and model
Skrsky S76A
Aircraft time
7,760 hours
Engine
Allsn 250C30S
Part
Seal
Part number
23063372
Condition
Torn
Location
Accessory G/B
Component
Accessory G/B · Allsn
Component part number
23035179
Stage of operation
IN
How discovered
9
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) SHORTLY AFTER INSTALLATION OF A REPAIRED ENGINE (40.5 HRS TSR), OIL COOLER BLOWER SEAL FAILED CAUSING SUBSTANTIAL LEAK FROM ACCESSORY GEARBOX. UPON REMOVAL OF SEAL, AME DISCOVERED A TORN SEAL LIP. IT WAS ALSO DETERMINED THAT INSTEAD OF ONE SPRING, (OR NONE FOR SEALS MODIFIED BY CEB 72-3260), THE SEAL CONTAINED TWO SPRINGS AROUND THE LIP. SEAL REPLACED, A/C RETURNED TO SERVICE.