Cessna SEL-74-05 Slick Magnetos

[GAHorn]

A Cessna Single Engine Letter “SEL-74-05” has just been received which is primarily addressed to many single-engine Cessnas which use Slick Magnetos on Lycoming engines. (The 170 series is not specifically mentioned... and THIS IS OFTEN A REASON that modified aircraft can be “missed” when important service and/or AD information is published as that publication may not mention ALL the aircraft that have the product installed.)
I have “cut and pasted” the pertinent portion of that SEL-74-05 in-case any of our Members should have that engine and magneto combination:

Spares Stock

Also affected are any Champion SLICK 4200 series, 4300 series, or 4700 series (LASAR) Magneto or K3822 Distributor replacement kit or K3008 Distributor Gear replacement kit dated September 26, 2008 thru September 1, 2016 that are in spares stock.
REASON
Champion Aerospace has issued SLICK Service Bulletin SB1-15A concerning a possible condition in
the distributor gear assemblies of 4-cylinder magnetos that can lead to decreased service life. Typical symptoms are unusual RPM drop during magneto check, difficulty starting, and/or rough running engines.
DESCRIPTION
This service document transmits Continental Motors SB15-4A, LYCOMING SB 622A, and Champion Aerospace SLICK Service Bulletin SB1-15A which has instructions for doing an inspection for suspect magneto distributor gear.
COMPLIANCE
RECOMMENDED. This service document should be accomplished at the next 100-hour or 12-month (annual-type) inspection.
A service document published by T extron Aviation may be recorded as completed in an aircraft log only when the following requirements are satisfied:
1) The mechanic must complete all of the instructions in the service document, including the intent therein.
2) The mechanic must correctly use and install all applicable parts supplied with the service document kit. Only with written authorization from T extron Aviation can substitute parts or rebuilt parts be used to replace new parts.
3) The mechanic or airplane owner must use the technical data in the service document only as approved and published.
4) The mechanic or airplane owner must apply the information in the service document only to aircraft serial numbers identified in the Effectivity section of the document.
5) The mechanic or airplane owner must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations.
SEL-74-05
October 21, 2019

[ghostflyer]

Thank you,George this had slipped through the cracks and still awaiting from.cessna to advise. While I haven’t had any problems it will be checked .this affects a big range of aircraft .

[ghostflyer]

Well believe it or not but received my SB from Cessna just now and add insult to injury my slick mags are toast ,they have to be modded. Will have to fit the new parts . But these are new mags of only 125 hrs but the cost of sending them back to the USA for the fix exceeds the cost of new mags.