Looks like a new AD is hitting us on SAP cylinders FAA website says there were 9 separations. Both Cont. & Lyc. 2007-04-19 looks like its going to be a spendy one. 470,520,550, and 0320,0360

nice to know they cut corners to save a few dollars, causing us to incur additional expenses... I for one will be seeking some type of compensation in an effort to recoup my out of pocket expenses...

engines had separated at the cylinder head-to- barrel threaded interface because SAP omitted a heat treat process step during cylinder barrel manufacture. This omission resulted in higher stresses in the cylinder head-to-barrel threaded interface, leading to fatigue cracking and cylinder head separation.