SDR HEEA061873

Service difficulty report · Pump · Skrsky S76A

Difficulty date
April 23, 1999
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N911MJ
Make and model
Skrsky S76A
Aircraft serial
760231
Engine
Allsn 250C30S
Part
Pump
Part number
23031461
Condition
Making Metal
Location
Scavenger
Part time
5,910 hours
Component
23035179
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

ENGINE REMOVED DUE TO SUSPECTED SCAVENGE PUMP FAILURE. OIL PUMP SCAVENGE BODY HAD EXCESSIVELY WORN GEAR WALLS. O-RINGS WERE FLAT AND HARD, OIL PUMP GEARSHAFTS HAVE EXCESSIVE GROOVES AND WEAR CONTRIBUTING TO POOR SCAVENGE. PART SCRAPPED.