Lee07 Posted February 19, 2010 Report Share Posted February 19, 2010 What does it take to convert a BII to a BIII? Assume the engine is a 250-c20b already. Tnx in advance. Quote Link to comment Share on other sites More sharing options...
ray Posted February 19, 2010 Report Share Posted February 19, 2010 It's not just the engine. Different: Rotor head Transmission Tail rotor Tail rotor gearbox Oil cooler blower Composite deck for oil cooler Larger diameter oil lines Servo support Nr gauge Torque gauge Segmented t/r driveshafting. You will need approvals from Bell to convert. Quote Link to comment Share on other sites More sharing options...
mudsoda Posted February 19, 2010 Report Share Posted February 19, 2010 If you look at 206-SI-112 it gives instructions on install of the C20B engine and it requires the BIII flight manual, I think this is the closest you will get to a BIII economically Quote Link to comment Share on other sites More sharing options...
wcobra Posted February 19, 2010 Report Share Posted February 19, 2010 Doesn't Bell SI 206-112 cover the whole deal? You then have a Bell 206B with SI 206-112 incorporated. I don't think you have to go to Bell for any additional approval, as long as you comply with the SI. The 206Blll Flight Manual is then in effect. Quote Link to comment Share on other sites More sharing options...
ray Posted February 20, 2010 Report Share Posted February 20, 2010 Doesn't Bell SI 206-112 cover the whole deal? I was answering from home so I didn't know the document number. So yes, this Service Instruction is the only approval you need from Bell. But you still have to fill out a 'major modification' form from Transport. Quote Link to comment Share on other sites More sharing options...
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