I would just like to see what is the emergency procedure for a single engine failure. Just curious.
http://www.globalsecurity.org/military/systems/aircraft/v-22-survive.htm
An interconnecting driveshaft allows the Osprey to continue flying in the advent of an engine failure. Either engine can power both proprotors, although with reduced performance. The drive train subsystem is comprised of two proprotor gearboxes (PRGB), two tilt-axis gearboxes (TAGB), one mid wing gearbox (MWGB), an interconnect drive train, and an emergency lubrication system (ELS). The primary purpose of the drive system is to distribute engine power to the two proprotors, which generate lift and thrust. The drive system enables power distribution to the proprotors during all engines operating (AEO) and one engine inoperative (OEI) conditions.
Under normal operating conditions, each proprotor gearbox is powered by the nearest engine via the engine output shaft. In the event of engine power loss, the proprotor gearbox associated with the failed engine receives power from the opposite engine through the interconnect drive system. A sprag-type overrunning clutch between the engine output shaft and the helical input gears overruns so that the failed engine will not be back driven by the PRGB
Accoridng to the air show announcer - it's fully capable of turning both on a single engine.
Of course lots of aircraft, about any with more than one engine, can fly with one cold but I've never met a pilot or mission planner who was in favor of the idea.
Side note: Saw a USMC MV-22 demonstrated yesterday - looks pertty good out there. All the stand bys, Seastallion/Cobra/Slick looked like they were at anchor.