As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING GROUND RUN FOR INSPECTION MAG DROP WAS EXCESSIVE. BENDIX MAGNETOS PN 10-500556-1, 1264.8 TSOH & PN BL-500556-1, 325.8. TSOH R & R WITH NEW PN 6310 & 14090532 SLICK MAGNETOS & NEW PN 10-423604-1 HARNESS ASSEMBLY. GND RUN CARRIED OUT WITH NO FURTHER FAULTS FOUND.