Where is it written that the RV-4 is "
only certified for single person aerobatic operations"?
All I can find is the aerobatics MTOW is 1372.69 lbs.
Interestingly though - remarks on Nolan Law Group (NLG) "Air Accident Digest" as follows:
23 Feb. 1740LClyde, Victoria
Van’s RV4Reg: VH-ZGH (tbc)
Seen in an unstable spiral shedding tailpieces in the local "aerobatics box"
2 dead/2 onboard
RV4 with two 116lb people and >22US gals exceeds the aerobatics weight limit.
I understand occupant's combined weight might have been more like 418 lbs - ie: 190 kgs
Makes you wonder!
Di
PS: Interesting Weight and Balance Calculator here:
http://www.rvproject.com/wab/wab.jsp...craftModelId=2