They plasma torched the -540 engines on the USAF planes. Crushed the avionics too I believe... thank a lawyer.gmcjetpilot said:You all heard of the US air force chopping up all those two seat composite trainers they used at the academy in colorado. The plane was a side by two seat low wing trike bubble canopy powered by Lyc 540's. Well a few crashed and they decided to chop them up in the last year. I wounder what they did with the avionics and engines? There is on on eBay right now with a 4 cylinder. They where made in England and came with 320's and 360's as well.