Service difficulty report · Spark Plug · Piper PA25

Difficulty date
February 7, 2017
Submitted
February 7, 2017
Operation
General aviation
Aircraft
N6260Z
Make and model
Piper PA25
Aircraft serial
25321
Aircraft time
6,934 hours
Engine
Lyc O360A1A
Engine time
2,707 hours
Propeller
Mcauly 1A200*
Part
Spark Plug
Part number
SLSTD1872
Condition
Departed
Location
Nr 3 Cylinder
Part time
51 hours
Stage of operation
CR
How discovered
O
Nature of condition
D, R, B
Precautionary procedure
B, E, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CRUISE , THE NR 3 CYLINDER, LOWER SPARK PLUG, DEPARTED THE ENGINE, CAUSING A SUBSTANTIAL LOSS OF POWER. THE SUSPECT SPARK PLUG WAS RECOVERED, AND WAS FOUND TO HAVE THE HELICOIL FROM THE CYLINDER STILL FIRMLY ATTACHED.

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