The A350 XWB development aircraft, MSN3, is in Bolivia where it will perform a series of tests at the high altitude airfields of Cochabamba and La Paz. Cochabamba is around 8,300 feet above sea level, and La Paz is one of the world’s highest airports at 13,300 feet.

Operations at such high altitude airfields are particularly demanding on aircraft engines, Auxiliary Power Unit (APU) and systems. The aim of these trials is to demonstrate and validate the full functionality of engines, systems, materials as well as to assess the overall aircraft behaviour under these extreme conditions. A number of take-offs with all engines operating and with simulated engine failures are being performed at each of the airfields to collect data on engine operating characteristics and validate the aircraft take-off performance. The autopilot behaviour will also be evaluated during automatic landings and go-arounds.

Since the A350 XWB’s first flight with MSN1 on June 14^th 2013, over 800 flight test hours have been performed in close to 200 test flights by both MSN1 and MSN3. In total the A350 XWB flight test campaign will accumulate around 2,500 flight hours with the fleet of five aircraft. The rigorous flight testing will lead to the certification of the A350-900 by the European EASA and US FAA airworthiness authorities, prior to entry into service in Q4 2014.