I just received notice of an
emergency AD for various TCM engines that immediately grounds SR20s, until their lifters are inspected. Over on COPA, they're saying it applies to the SR22 as well. That should leave the skies quiet for a while.
I have read the AD. It is by serial number and only affects very recent aircraft. Also, since people like to make things Cirrus specific, please remember that it applies to a broad range of TCM engines no matter the airframe manufacturer. It currently does not list the IO 550N but I believe this is an oversight and will get corrected.