Strictly speaking there is no B58 in the Beechcraft range, though there are other Beech models that come with a letter prefix, eg B55, C55, B95, D95, C95. The only 58 to have a prefix is the current Baron model, G58, though Beechcraft themselves talk at times of a B58, just to confuse matters. Not all Barons are 58's, the predecessor Barons were 55, A55, B55, C55, D55, E55. That's not to mention the 56, a turbo powered version, and the prefix 95 in some of the 55 models. To confuse matters further ICAO calls a 55 a 58, no doubt because its a look alike.
B2N2, that's one good looking R-22 helicopter you put up.
