How does the MD 900 accomplish auto rotation with the NOTAR system? The MD-900 is a helicopter which seems to be quite popular with law enforcement agencies.



As you can see, instead of an anti-torque tail rotor, a fan exhaust is directed out slots in the tail boom. I was wondering if this works in regards to auto rotation, should the aircraft lose its engines.
According to https://en.wikipedia.org/wiki/NOTAR the NOTAR fan is driven by the main rotor transmission. This will ensure maneuverability during autorotation.