As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING COMPLIANCE OF AD78-09-07R3, MAGNETO IMPULSE COUPLING INSPECTION, DISCOVERED THAT PREVIOUS COMPLIANCE WITH LYCOMING SI NR 114D, THE MAGNETO DRIVE BUSHING HAD WORKED LOOSE. FABRICATED AND RE-INSTALLED NEW BUSHING IAW LYCOMING SI NR 1140.