SDR 98ZZZX1258

Service difficulty report · Seal · Skrsky S76

Difficulty date
December 1, 1997
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N705AL
Make and model
Skrsky S76
Aircraft serial
760267
Part
Seal
Part number
7333FT160N
Condition
Leaking
Location
Mlg Lower Cyl
Part time
2,747 hours
Component
1945E100B
Stage of operation
IN
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

IN FIELD 12-97, OIL LEAKING FROM STRUT AND PROBLEM SERVICING STRUT. STRUT WOULD NOT ACTUATE PROPERLY. FOUND LOW OIL LEVER IN CYLINDER PREVENTING PROPER ACTUATING OF PISTON HEAD SNUBBER. THIS ALLOWED UNCONTROLLED EXTENSION OF STRUT PISTON DURING AIRCRAFT LIFT-OFF AND HAMMERING OF PISTON HEAD AGAINST EXTENSION STOP AND SHEARING OF PISTON HEAD RETAINING PINS. THIS ALLOWED PISTON TO SEPARATE FROM PISTON HEAD. PISTON JAMMED PISTON HEAD IN TOP OF STRUT CYLINDER AND PREVENTED PROPER MOVEMENT OF PISTON IN STRUT CYLINDER.