TBM and BBadanov, As BR71 says elsewhere you can't always take official sources as the real gen. ALL the Navy Hueys were B models. Said so on the manufacturers data plate, and you can check on the Historic Flights N9-3104 (898) which is still flying.
Distinguishing features of a C model,
Dual hydraulics (B had one)
Longer tail boom
Broader chord vertical stab which had an asymmetric airfoil to off load the tail rotor (B symmetrical)
Larger horizontal stab
540 rotor system with larger chord blades
Pitot mounted on the roof (B on nose)
Fuel capacity 242 US Gals (B model was either 160 or 242, Navy 894 and 898 had 242, the others 160, but not sure about 896)
Vne 140 (B 120)
Andu, correct about the radios. Had to make the radios compatible with the stores holding of spares for the Vampire and Venom. 5 channel crystal tuned and the designation 1939 rings a bell. The year they were introduced for Spitfires and Hurricanes for the Battle of Britain so the story went.
Last edited by Brian Abraham; 24th Jul 2010 at 12:43.