The Sport Pilot regs say that a Private Pilot acting as a Sport Pilot
must have a current Bi-annual flight review, but I cannot find anything
in the Sport Pilot regs. that states that a Sport Pilot must have a
flight review of any kind after he/she gets the initial license. If
that is the case, why can't a Private Pilot act as a Sport Pilot
without having to have the Bi-annual flight review?

Neal