V-22 Osprey is in production and the Marines and Air Force are using them in Afgahanistan, Iraq, and Other theatres. It was a problem child from the beginning and without getting too tech savy it was a venture purchased with lot of test pilot blood. Exact figures as to how many crashed and how many died in protype tests are really not released. What you find on Wiki and other sites is the PR release data for this.
Exact numbers built is still speculative at best. I currently do not know what Air Force units are flying them.
I suspect it is Special OPS out of Hurlburt Field Florida the same unit flys our C-130 gunships with 105mm Howitzers and 40 mm guns, which the Air Force denied we had in use for years. As a Airman 1st Class I landed in the Azores and there was 4 of the blasted non-exsistant gunships sitting on the ready ramp with all thier guns sticking out. In my carreer I never saw one V-22 in actual flight operations. I think there was a cover up of any additional losses since it became fully operational.
SDI I will provide an update later. I can till you this the name has changed multiple times since President Reagan and its nickname of Star Wars. It scared the crap out of the Russians and the Warsaw Pact that they feared it would knock out their ability for MAD Mutually Assured Destruction. More on this later.