SDR 99ZZZX652

Service difficulty report · Gasket · Beech G35

Difficulty date
January 1, 1999
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N4254D
Make and model
Beech G35
Aircraft serial
D4471
Engine
Cont E2258
Part
Gasket
Part number
352059
Condition
Broken
Location
Crankcase
Part time
20 hours
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

THE GASKETS THAT SEAL THE INTAKE MANIFOLD (WHICH HAS ENGINE OIL CIRCULATING THROUGH IT) HAVE BRASS EYELETS FORMED INTO THE PAPER GASKET AROUND THE BOLT HOLES. USING STANDARD TORQUE OF 175 INCH/POUND FOR THE .3125 INCH - 18 EACH BOLTS RESULTED IN THE GASKET LEAKING. RE-TORQUING RESULTED IN THE PAPER GASKET SPLITTING AND LEAKING MORE. MADE PAPER GASKETS WITHOUT EYELETS AND RESOLVED THE PROBLEM. SUBMITTER RECOMMENDS DISCONTINUING USE OF THE GASKETS WITH EYELETS IN THE APPLICATION.

More about the Beech G35