riggerrob 643 #1 September 8, 2014 The FAA updated an Airworthiness Directive on the PT6A-114and -114A engines installed in Cessna Caravans. The AD requires recurring bores old inspections of compressor turbine blades. The AD must be done by the end of October 2014. This is not a new problem. Pratt & Whitney and TC have been calling for bore scope inspections since at least 2007. Also remember that the 2008 crash of a Twin Otter jump-plane in Missouri was caused by a turbine blade failure. Quote Share this post Link to post Share on other sites
