Service difficulty report · Rotor

Difficulty date
February 9, 2011
Submitted
March 15, 2011
Operation
General aviation
Part
Rotor
Condition
Broken
Location
Magneto
Part time
47 hours
Component
Magneto · Champion
Component part number
4370
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

MAG WAS RECEIVED FOR WARRANTY EVALUATION DUE TO MAG BEING U/S AT 47 HRS SINCE NEW. MAG WAS DISASSEMBLED AND THE ROTOR GEAR, CAM AND THE 2 HALVES OF THE ROTOR AT THE CAM GEAR SLOT WERE FOUND STILL ASSEMBLED BUT BROKEN AWAY FROM THE REST OF THE ROTOR. THIS WOULD KEEP THE MAG FROM FIRING ALL CYLINDERS AND POSSIBLY ONLY FIRE 1 CYLINDER BUT AT 2 TIMES IAW ENGINE REVOLUTION. THE MAG IS BEING RETURNED TO MFG AND A NEW MAG WAS SENT TO THE CUSTOMER.