As we go to press, the FAA is seeking comments on a proposed airworthiness directive requiring the recall and replacement of some 2000 cylinders built by Engine Components, Inc., the San Antonio, Texas parts house that’s a leading supplier of aftermarket cylinders.

As we’ve reported in previous issues, the affected cylinders may be in danger of cracking due to a faulty heat treating process. ECI’s Ed Salmeron told us that of 2000 or so cylinders affected by the recall—all for large displacement Continental engines—there have been 37 incidents of cracking. He said none of these have resulted in accidents and most have been discovered on the ground by compression checks or…