Some hydraulic lifters from Teledyne Continental Motors (TCM) have shown premature wear — some in as little as five hours. TCM issued a mandatory service bulletin on Nov. 3. The FAA subsequently issued an emergency Airworthiness Directive after assessing the bulletin. All the lifters in question were installed after June 19, 2009 and the AD includes new engines as well. For more information, go to genuinecontinental.aero.
Mark PhelpsAuthor
Mark Phelps is a senior editor at AVweb. He is an instrument rated private pilot and former owner of a Grumman American AA1B and a V-tail Bonanza.
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