What happened
On April 4, 2012, at approximately 0950 UTC, a Boeing 737-600, registration LN-RPS, operated by Scandinavian Airlines, experienced a failure of the left bleed system while climbing through flight level (FL) 370. The aircraft continued its climb to FL410 using only the right bleed system.
While maintaining FL410, the right bleed system also failed. In response to the loss of both systems, the crew initiated an emergency descent to 10,000 feet and deployed oxygen masks. The flight diverted to Umeå, Sweden (ESNU). There were no injuries among the 6 crew members and 116 passengers, and the aircraft sustained no damage.
The investigation
The Swedish Accident Investigation Authority is conducting the investigation. The NTSB has appointed an Accredited Representative to assist the investigation as the State of Manufacture and Design of the airplane.