Eurocopter (OE13) is not showing its experimental X3 hybrid helicopter at full force during the ongoing demonstration in the USA due to national regulations.
Airspeed is limited to 220kt (407 km/h) and pilots are not banking the EC155 Dauphin-based helicopter further than 85˚, even though bank angles of 120-140˚ would be "easily possible", says chief executive Lutz Bertling.
The paperwork necessary to fly a French experimental military aircraft in the USA and operate from military airfields was the biggest obstacle in arranging the campaign, he says. The authorities approved the operation only with limitations, because they did not want to reassess the complete certification file for the aircraft, given that its capabilities go beyond the flight envelope of in-production models.
http://www.flightglobal.com 
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