Airbus has wrapped up functional and reliability testing for its A350-1000, and is expecting to achieve certification for the twinjet this month.
The testing involved operating one of the test aircraft, MSN65, on a range of routes over Europe and South America during the last two weeks.
Airbus has flown the aircraft to several cities including Bogota and Barranquilla in Colombia as part of the exercise.
MSN65 returned to Toulouse on 1 November, the airframer states.
Airbus says the aircraft conducted 150h of flights during the operation and covered a total distance of some 35,200nm.
The A350-1000, powered by Rolls-Royce Trent XWB-97 engines, is "on track" for certification and delivery to launch customer Qatar Airways by the end of this year.
Qatar Airways has 37 of the variant on order.
Airbus commenced A350-1000 flight testing on 24 November last year. Three -1000s have been used for the test programme which has covered high-altitude performance, autoland, navigation, cabin system tests, and airport handling among other aspects.