The FAA hasn't done enough to address fatigue problems with Engine Components Inc. (ECi) cylinder assemblies in some general aviation aircraft with TCM engines, the NTSB said (PDF) on Monday. Several airworthiness directives were issued to deal with ECi problems between 2000 and 2009. However, the NTSB said ECi has shown that at least eight cylinder-head fatigue failures occurred in a group of cylinder assemblies produced for installation on TCM engines between October 2005 and October 2009, which are not covered by any corrective bulletin or directive. ECi presented its evidence to the FAA and NTSB in January 2011, but the FAA has not taken any action.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/ntsb-cites-additional-cylinder-head-issues