A Cessna LSA is not a certified aircraft in the same way as a Cessna 150 or 152. A LSA only has to meet consensus standards. Can changes be made to the Cessna LSA by the owner with IA approval without the need for a lot of paperwork. In other words, if you decide to use autogas, or convert to 85 percent ethanol, or put in a different attitude indicator, what requirements must be met? Are Form 337s or STCs still needed for LSA. Or, for that matter can you make any changes at all that depart from the factory version.
