What was found
PRESSURIZED SLICK MAGNETOS ON CESSNA T210L. DURING ANNUAL, INSPECTED MAGS INTERNALLY FOR CONDITION. FOUND SEVERE MOISTURE-CASED CORROSION ALL AROUND INSIDE. MAGNETO MANUAL CALLS FOR INSPECTION OF 6200 SERIES EACH 100 HOURS, NOTHING FOUND FOR INSPECTION OF 6300 SERIES. MANUAL SAYS TO CLEAN CORROSION AND RE-INSTALL. CORROSION SO EXTENSIVE, MAGS REPLACED. SLICK AD 88-25-04 ADDRESSES THIS PROBLEM, BUT THESE MAGS, 6320 SERIES, ARE NOT IN THE APPLICABILITY SECTION. SUBMITTER STATED AD SHOULD BE REVISED TO INCLUDE 6300 SERIES PRESSURIZED MAGNETOS. (X)