http://https://www.verticalmag.com/n...utm_content=V1
Rather than featuring the company’s famous NOTAR anti-torque technology, the MD 6XX has a more traditional four-bladed tail rotor and an extended composite tail boom, which MD claimed will deliver 40 percent more anti-torque power.
Is this an official admission that NOTAR doesn't work?
The use of the tail rotor is also said to provide a reduced noise signature.
And I thought noise reduction compared to TR-equipped choppers was a major advantage of the NOTAR...