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Airworthiness Directives (ADs) and Service Bulletins (SB).

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SLICK SERVICE BULLETINS

SB1-12

Additional returns of point contacts that exhibit accelerated wear in magnetos with low service hours, prompting the issue of this Service Bulletin. Typical symptoms are unusual RPM drop during magneto check, difficulty starting, rough running engine, and/or unstable point timing upon installation.

SB1-15B

Potential decreased service life of Slick 4-cylinder magneto distributor gear assemblies. Based on process and component improvements following the initial release of this service bulletin, the serial number range is being extended since the initial release. This condition was observed in magnetos with a varying number of service hours. Typical symptoms are unusual RPM drop during magneto check, difficulty starting, and/or rough running engines.

SB1-19A

There have been limited reports in which impulse coupling stop pins have moved relative to the factory placement within the magneto frame of Slick magnetos. There has been one report of a liberated stop pin. A liberated stop pin could potentially enter the gear train of the engine, resulting in damage to the gear train, damage to engine accessories and could ultimately cause catastrophic engine failure.

SB2-19A

There have been limited reports in which impulse coupling rivets have loosened relative to the factory placement. A loose or broken rivet could potentially enter the gear train of the engine resulting in damage to the gear train or damage to engine accessories and could potentially cause catastrophic engine failure.
This service bulletin has been updated to add the "TIO" engines to category 2 and make both alternative methods of compliance applicable to either category 1 or 2.

Magneto Service and Inspection

Bendix/TCM/CMI

MSB-645

The Subject Matter Of This Service Bulletin Is Incorporated In Whole Or In Part In An FAA Airworthiness Directive. SUPSEDES SERVICE BULLETIN 599D FAA APPROVED. All TCM & Bendix S-20, S-1200, D-2000 and D-3000 series magnetos with riveted impulse couplings as installed on TCM, Lycoming, Franklin and other manufacturer's engines.

SB643C

All aviation gasoline engines using Continental Motors, Inc. (CMI) (formerly TCM/Bendix) S-20, S-200, and S-1200 series magnetos, ignition harnesses, and CMI ignition switches and starting vibrators (where installed). If internal magneto components require replacement or adjustment, the magneto must be removed from the engine.

SB658

DISTRIBUTOR GEAR MAINTENANCE. To emphasize the value of the use of correct materials and practices relevant to magneto distributor gears. All Bendix and TCM S-20, S-200, S-1200, D-2000, and D-3000 Series Magnetos

SB670

Supersedes SB669 TECHNICAL PORTIONS FAA APPROVED. Replacement and maintenance of the Continental Motors S-20, S-200, and S-1200 Series Magneto Distributor Block. To advise of availability of improved distributor blocks and to advise of updated maintenance and inspection procedures. During the next 500-hour magneto maintenance event, or at the next magneto overhaul, whichever occurs first.

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