DAYS AFTER FLYING AN OVERHEAD MANEUVER TO A LNDG; AN EXTRA 300L PLT FINDS THAT THERE HAS BEEN QUESTIONS ASKED ABOUT THE APPROPRIATENESS OF HIS ARR AT 61B; NV.

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PART 91 AEROBATIC TRAINING/THRILL RIDE. NORMAL BRIEFING OF PAX; TAXI; TKOF; AND RTE OF FLT. PROB AROSE RETURNING FROM A SIGHTSEEING POINT OF THE FLT IN TRANSITION TO LNDG 61B. ACFT BEING FLOWN IS EXTRA 300L. APPROX 2.5-3 MI N AND W OF THE ARPT I STARTED THE SMOKE SYS AND BEGAN DISPENSING WHITE SMOKE AROUND THE LATERAL BOUNDARIES OF THE TFC PATTERN APPROX 3500 FT MSL; 500 FT ABOVE STANDARD TFC PATTERN AT 61B. FLYING AROUND TFC PATTERN WITH SMOKE ON; I ENTERED AN OVERHEAD APCH TO LNDG RWY 27L. DSNDING TO 3200 FT MSL ON THE INITIAL; I OBSERVED A HIGH WING CESSNA ACFT TAXI POS AND HOLD RWY 27L. I DIDN'T SEE THE HOLD PORTION AS I WAS ABOVE HIM. I MADE NORMAL APCH AND LNDG WITH SMOKE OFF AFTER THE TURN TO DOWNWIND. 3 DAYS LATER; I SPOKE WITH A GOOD FRIEND THAT WAS CONTACTED BY THE FAA AS TO AN EXTRA USING CARELESS AND RECKLESS BEHAVIOR; DISRUPTING THE FLOW OF TFC IN A NORMAL TFC PATTERN. OPERATING BELOW MSA'S; IN REF I IMAGINE TO SMOKE BEING DISPENSED; AND AEROBATIC MANEUVERS BELOW THE LATERAL BOUNDARIES OF CLASS B AND E AIRSPACE. I KNOW OF NO RULE WHATSOEVER TO PREVENT SMOKE FROM BEING USED IN THE TFC PATTERN IN AN AIRPLANE WITHOUT A LNDG LIGHT; NOR HAVE I FOUND ANYTHING IN THE FAR/AIM THAT PREVENTS OVERHEAD APCHS TO LNDG AT AN UNCTLED AIRFIELD. THE ACFT IS CAPABLE OF DOING THE MOST EXTREME OF UNLIMITED AEROBATIC MANEUVERS; BUT IS A PROPERLY EXECUTED OVERHEAD AEROBATIC? IS IT ILLEGAL TO COMMENCE WITH AN OVERHEAD IF AN AIRPLANE IS TAXIED TO POS AND HOLD? WHAT IS OPERATING TOO CLOSE IN AN OVERHEAD?