Service difficulty report · Magnetic Plug · Urocop EC120B

Difficulty date
October 13, 2004
Submitted
March 3, 2005
Operation
General aviation
Make and model
Urocop EC120B
Aircraft time
200 hours
Engine
Tmeca ARRIU2F
Part
Magnetic Plug
Part number
7052A3632279
Condition
Cracked
Location
T/R Gearbox
Component
Gearbox · Urocop
Component part number
C652A0101053
Stage of operation
IN
How discovered
O
Nature of condition
N, W
Precautionary procedure
K

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

What was found

PILOT REPORTED INTERMITTENT INDICATION OF GEARBOX CHIP DETECTOR. ON INSPECTION NO CHIP FOUND. A LOOSE CONNECTION BETWEEN ELECTRICAL PORTION OF CHIP PLUG & MAGNETIC PART ALLOWED FOR A FALSE INDICATION. THE SWAGGED CONNECTION BETWEEN THE TWO PARTS CRACKED & BROKEN. IN 2002 A SIMILAR PROBLEM HAD OCCURRED, BUT THIS PARTICULAR PLUG MANUFACTURED IN 2003. NEW PLUG ORDERED & UPON RECEIVING NEW PART IT TOO WAS CRACKED. EUROCOPTER CANADA CONTACTED AND A THIRD PLUG SENT. AGAIN UPON INSPECTION IT TOO WAS CRACKED IN SAME SWAGED LOCATION. A CONTINUED LACK OF Q/A BETWEEN MANUFACTURER & EUROCOPTER HAS ALLOWED THIS KNOWN PROBLEM TO PERSIST FOR OVER TWO YEARS. CURRENTLY WE ARE WAITING FOR YET ANOTHER CHIPPLUG.

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