First Such Tests Ever Done For Tiltrotors
Sources with Bell Helicopter and Boeing tell ANN the Bell Boeing
V-22 Osprey program's Airframe Fatigue Test Program surpassed the
20,000 Effective Flight Hour (EFH) milestone on February 22, 2007.
The Fatigue Test Program, involving a full-size V-22 aircraft,
began in June 1998, and is the first ever conducted for a
tiltrotor-type aircraft.