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Bell 206bii Covert To Bell206biii


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It's not just the engine.




Rotor head


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.


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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.

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