[MarkR]

Very scary report on the effects of wake turbulence:

http://flightservicebureau.org/enrou...4-upside-down/

A Challenger 604 at FL350 operating from Male-Abu Dhabi passed an A380 opposite direction at FL360, one thousand feet above, about 630nm southeast of Muscat, Oman, over the Arabian Sea.

A short time later (1-2 minutes) the aircraft encountered wake turbulence sending the aircraft into an uncontrolled roll, turning the aircraft around at least 3 times (possibly even 5 times), both engines flamed out, the aircraft lost about 10,000 feet until the crew was able to recover the aircraft, restart the engines and divert to Muscat. The aircraft received damage beyond repair due to the G-forces, and was written off.