78-09-07 R3 BENDIX: Amendment 39-3205 as amended by Amendments 39-3252 and 39-3963 is further amended by Amendment 39-4538. Applies to Bendix S-20 series, S-1200 series, D-2000 series, and D-3000 series magnetos incorporating impulse couplings.
Compliance required as indicated unless previously accomplished.
To preclude magneto or engine failure resulting from magneto impulse coupling failure, accomplish the following:
a. On magnetos having less than 475 hours time in service since new or overhaul, accomplish the provisions of paragraphs "c" and "d" of this AD prior to 500 hours time in service and thereafter at intervals not to exceed 500 hours time in service from the last inspection.
b. On magnetos having 475 or more hours in service since new or overhaul, accomplish the provisions of paragraphs "c" and "d" of this AD within the next 25 hours time in service and thereafter at intervals not to exceed 500 hours time in service from the last inspection.
c. Inspect and replace, if necessary, impulse coupling components in accordance with the paragraph titled "Detailed Instructions" contained in Bendix Engine Products Division Service Bulletin Number 599B or an FAA approved equivalent.
d. After accomplishing paragraph "c" of this AD, make a logbook entry showing the compliance time. Include the magneto make, model, and serial number.
(Note: Except for new or zero time overhauled magnetos, any magneto not accompanied by a record of operating time must be in compliance with paragraph "c" upon installation on an approved engine.)
e. Equivalent inspections and procedures must be approved by the Manager, New York Aircraft Certification Office, Room 202, 181 South Franklin Avenue, Valley Stream, New York 11581.
f. As permitted by Federal Aviation Regulations (FARs) 21.197 and 21.199, aircraft may be flown to a base where maintenance required by this AD can be accomplished.
Amendment 39-3205 was effective May 9, 1978.
Amendment 39-3252 amended Amendment 39-3205 effective July 3, 1978.
Amendment 39-3963 amended Amendments 39-3205 and 39-3252 effective November 3, 1980.
This Amendment 39-4538 is effective on January 17, 1983.