Service difficulty report · Impulse Coupling

Difficulty date
December 30, 2022
Submitted
January 30, 2023
Operation
General aviation
Aircraft
N952A
Engine
Lyc O360A4M
Engine time
776 hours
Part
Impulse Coupling
Part number
M3163
Condition
Defective
Location
Magneto
Part time
479 hours
Component
Magneto · Champion
Component part number
4371
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

ENGINE LEFT MAGNETO MODEL 4371 S.N. 21080467, FOUND IMPULSE COUPLING P/N M3163 TO HAVE LOOSE RIVETS. REPLACED WITH NEW.