Service difficulty report · Impulse Coupling · Cessna 172N

Difficulty date
September 2, 2009
Submitted
October 23, 2009
Operation
General aviation
Make and model
Cessna 172N
Aircraft time
14,296 hours
Engine
Lyc O360A4A
Propeller
Snsnch 76EM8S5
Part
Impulse Coupling
Part number
M3529
Condition
Broken
Location
Magneto
Part time
1,563 hours
Component
Magneto · Slick
Component part number
4373
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

DURING 500 HR INSP OF MAGNETO, PAWL PLATE WAS FOUND TO BE MISSING PIECES AT BOTH OF THE STOP LOCATIONS. ONE PIECE WAS FOUND ON THE LIP OF THE MAGNETO ADAPTER AND THE OTHER WAS RETIEVED WITH A MAGNET FROM THE BOTTOM OF THE ACCESSORY CASE.

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