What was found
ENGINE SUDDENLY BECAME ROUGH. MAG CHECK INDICATED TROUBLE WITH RIGHT MAG, FLIGHT CONTINUED ON SINGLE MAG. OPERATION - AT TERMINATION OF FLIGHT, MAGS RE-CHECKED. RT MAG DEAD; OPENING UP MAG REVEALED 'BEARING' GREASE IN MAG HOUSINGS. COIL APPEARED INTACT, BUT DID NOT CHECK OUT. FRONT BEARING HAD 'ROUGH SPOTS'. TOTAL TIME SINCE NEW, 200 HOURS.