With almost all engine failures (that was prt of CASA limitations descisions) in L2 and LAME maintained, it doesnt bode too well for that system.
All training engines to be spilt and fitted with new thoughbolts at 500hrs
Not new models as they hve them already
The assessment and head removal inspection SB was out before the CASA action.
There is a problem with so many variations and staus of engines out there it complicates dignosis.
But they are cheap and easy to work on
There is now a process for RAA experimentals to modify to different engines if required. Even some good looking Camit ones getting around.