An Aeroflot Airbus A330-300, registration VQ-BMX performing flight SU-520 from Moscow Sheremetyevo (Russia) to Dubai (United Arab Emirates), was climbing out of Sheremetyevo's runway 06R when the crew stopped the climb at FL080 due to a navigation equipment failure, possibly a failed sensor. The aircraft entered a hold while the crew was working the checklists to no avail, then returned to Sheremetyevo for a safe landing on runway 06L about 40 minutes after departure.

A replacement Airbus A330-300 registration VQ-BPJ reached Dubai with a delay of 3 hours.

The occurrence aircraft returned to service about 12 hours after landing back."