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From: "Rumburg, William" <william.rumburg@cdicorp.com>
To: lancair.list@olsusa.com
Subject: Magneto Reliability Problems...AOPA ePilot--Vol. 2, Issue 23
Date: Fri, 9 Jun 2000 08:03:15 -0400 
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Magnetos never fail.....

> EMERGENCY AD ISSUED FOR 'SLICK' MAGNETOS
> On Wednesday the FAA released emergency AD 2000-11-51 mandating 
> replacement of certain Unison (Slick) magnetos on Teledyne Continental
> Motors (TCM) O-300, IO-360, TSIO-360, and LTSIO-520-AE engines. Affected 
> magnetos include Unison models 6314, 6324, and 6364 serial numbers 
> 99110001 through 99129999 inclusive. The FAA issued the AD in response 
> several incidents including an in-flight failure of an IO-360 installed 
> in a Cirrus SR-20 in which the magneto impulse coupling stop pin 
> migrated out of the magneto frame, causing damage to the gear train of 
> the engine and ultimately engine failure. The AD mandates removal and 
> replacement of affected magnetos within 10 hours TIS after receipt of 
> the AD. Upon removal, suspect magnetos must be inspected to ensure that 
> the stop pin is still present. If it's missing, the AD requires 
> inspection of the gear train or oil sump to find the missing pin and to 
> look for additional damage. TCM will extend warranty coverage to factory 
> installations still under warranty. Unison will cover the cost of 
> required inspections and parts replacements for all aftermarket parts 
> and will extend warranty coverage for any inspections/repairs resulting 
> from missing stop pins on a case-by-case basis. Affected aircraft owners 
> are encouraged to contact Unison customer service at 815-965-4700 for 
> warranty information. For more information and a copy of the AD contact 
> AOPA's Pilot Assistance Hotline at 800-872-2672.
> 
Bill Rumburg
N403WR  (Sonic bOOm)
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