SDR 95ZZZX3325

Service difficulty report · Screw · Beech 95

Difficulty date
June 1, 1995
Submitted
March 26, 2000
Operation
General aviation
Make and model
Beech 95
Propeller
Hartzl HC92WK2
Part
Screw
Part number
A321
Condition
Broken
Location
Blade Clamp
Component
C1301
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

DURING DISASEMBLY, INNER CLAMP SCREW FOUND BROKEN OFF ON THE SHANK AT TOP THREAD, ENTERING CLAMP. SURFACE OF BREAK APPEARED CLEAN WITH A SMALL PIT ORIGINATING IN THE MIDDLE OF THE THREAD AREA. SUSPECT PIT WAS CAUSED BY MOISTURE CREEPING AROUND SOCKET HEAD OF SCREW. SUGGEST COUNTER BORE OF BOLT BE SEALED WITH RTV, 102, OR 103 AFTER SCREW IS INSTALLED AND TORQUED. SCREW IS SUBJECT TO SB 202 AND AD NOTE 95-11-08.

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