Emergency Ad issued for TCM

The FAA has issued an emergency Airworthiness Directive (AD), effective immediately for all Teledyne Continental Motors. The AD issues TCM reporting three occurrences of rapid wear on the face of hydraulic lifters; if not corrected could result in loss of engine. 

FAA Requires Inspections For Some Teledyne Continental Motors

The FAA issued on Tuesday airworthiness directive that affects certain Teledyne Continental Motors reciprocating engines with TCM EQ3 cylinders installed. The Ad applies to engines in the O-470, IO-470, TSIO-479, IO-520, TSIO-550, and IOF-550 series. The AD requires initial and repetitive visual inspections of TCM EQ3 cylinders for cracks and must be indentified and intially inspected within 20 flight hours after October 7, 2009. Cracks in cylinder head can cause engine failures or fire in the engine compartment.

Instructions: http://edocket.access.gpo.gov/2009/E9-22287.htm