Service difficulty report · Pushrod

Difficulty date
September 26, 2011
Submitted
November 4, 2011
Operation
General aviation
Engine
Pwa R1340AN1
Part
Pushrod
Part number
11876
Condition
Failed
Location
Cylinder
Stage of operation
IN
How discovered
9
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

AN EXHAUST PUSH ROD WAS FOUND TO HAVE FAILED. THE PUSH ROD BROKE ADJACENT TO TAPPET. IT WAS FOUND THAT SB 1722 HAD NOT BEEN COMPLIED WITH. THE SB RECOMMENDS SHOT PEENING OF ALUMINUM PUSH RODS FOR STRENGTH.