Thank you Burt. I am easily confused and this SFAR is no help. Some of my questions: Performing as a CFI requires a commercial certificate - does that count? Being a CFI at a flight school seems to me to be "in support of a business" - does that count?

Speculating: I would think - but not official advice from me - that holding the Commercial certificate and as your "business," charging for your time as a Certificated Flight Instructor (ground and flight time) a realistic dollar amount might qualify. "Realistic" rate may be $20 to $60 / hour.

EAA and AOPA are working on this . . .