Service difficulty report · Stud · Piper PA31350

Difficulty date
May 21, 1998
Submitted
March 26, 2000
Operation
General aviation
Make and model
Piper PA31350
Engine
Lyc TIO540J2BD
Part
Stud
Part number
5015
Condition
Broken
Location
Engine Cylinder
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

(CAN) DURING INSPECTION THE BOTTOM FORWARD STUD ON NR 2 CYLINDER, AT THE BASE OF THE CYLINDER FLANGE, WAS FOUND BROKEN. THE REPORTER SUGGESTS THAT THE STUD WAS NOT COMPLETELY THREADED INTO THE CASE, WHICH CAUSED THE NUT TO BECOME THREAD BOUND WHICH STRESSED THE STUD AND LED TO THE FRACTURE.

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