We've just had a large biplane over here,quite low,750-1000feet,sounded to be turbo prop.
Bearing in mind the Lowestoft airshow was nearby last two day it may have had something to do with that.
Any ideas what it was?
PS- not a Stearman,we have three of those at our strip,I know what they sound and look like
Just had a Google,it could be Antonov AN2