What was found
AFTER TAKEOFF FROM MWH TO BFI, THE LEFT ENGINE STARTED TO RUN ROUGH. PILOT RETURNED TO MWH. MECHANIC FOUND RIGHT MAGNETO NO GOOD, MAGNETO WAS CHANGED, GROUND RUN CHECKED OK AND AIRCRAFT RETURNED TO SERVICE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF FROM MWH TO BFI, THE LEFT ENGINE STARTED TO RUN ROUGH. PILOT RETURNED TO MWH. MECHANIC FOUND RIGHT MAGNETO NO GOOD, MAGNETO WAS CHANGED, GROUND RUN CHECKED OK AND AIRCRAFT RETURNED TO SERVICE. (M)