What was found
AIRCRAFT MADE OFF-AIRPORT LANDING JUST AFTER TAKE-OFF, DUE TO LOSS OF POWER. DURING INVESTIGATION, MAGNETO WAS DISASSEMBLED AND INSPECTED. LEFT DIDTRIBUTOR TOWER HAD NR 5 TOWER SPRING MISSING AND CORROSION AT CONTACT, GREASE CONTAMINATION WAS NOTED INSIDE DIRTRIBUTOR BLAOCKS AND UNDERNEATH DISTRIBUTOR GEARS MIGRATED FROM CENTER AFT BEARING, SIGNS OF ARCING AND FLASH-OVER OBSERVED.