Service difficulty report · Pin · Dhav DHC3

Difficulty date
July 25, 2002
Submitted
August 7, 2002
Operation
General aviation
Make and model
Dhav DHC3
Aircraft time
1,550 hours
Engine
Wsk ASZ62IRM18
Part
Pin
Part number
K60516
Condition
Fractured
Location
Nr 9 Cylinder
Stage of operation
IN
How discovered
V
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) THE PIN FRACTURED IN THE AREA OF THE PIN THE RUNS INSIDE THE LINK ROD BUSHING. THE FRACTURE APPEARS TO HAVE ORIGINATED INSIDE THE CASTING AS A RESULT OF A FLAW IN THE CASTING OR FROM AN INCLUSION OR SOME OTHER INHERENT DISCREPANCY IN THE CASTING.THE EDGES OF THE FRACTURED PIN SHAVED THE BRASS LINK ROD BUSHING ALMOST TO THE LINK ROD PARENT MATERIAL AND CONTAMINATED THE ENTIRE ENGINE WITH BRASS.THE PIN IS BEING FORWARDED TO THE MANUFACTURER FOR FURTHER INVESTIGATION.