"As an airplane it's quite safe," Arthur Rex Rivolo, an expert on rotorcraft who runs an aerospace corporation in Virginia of the US, said in recent email interviews with Asia Times Online.
"But its helicopter role is always very precarious.
The shortcomings of the V-22
have to do with the design of the aircraft.
The biggest concern over the aircraft is that it has smaller rotors.
As a helicopter, that is working very hard to stay in the air."
Rivolo served as the principal analyst for the MV-22 and CV-22 at the Institute for Defense Analyses (IDA), a nonprofit organization paid to do independent research for the Pentagon, from June 1992 to March 2009.
was a pilot fir six years at the US Air Force
and 22 years at the Air National Guard.
testified before the House of Representatives
in June 2009 on the inability of the MV-22
Osprey to safely autorotate - that is, to conduct an emergency power-off landing by rotating its propellers with the help of the wind, even after all engines become inoperative.
"The aircraft is unable to autorotate," Rivolo
pointed out the chances of the Osprey's two engines failing in peacetime are very rare, "but if both engines fail, that would be a very serious problem of the V-22
"The Morocco accident is the classic of [the] V-22