The fifth and final aircraft in the Airbus A350 WXB flight-test program completed its first flight Friday from the company’s Toulouse facility.

MSN005 is the second passenger cabin-equipped A350 and is tasked with route proving and ETOPS validation. The aircraft is in the operationally definitive configuration for Type Certification duties.

Certification is anticipated in the third quarter of this year, with first delivery to launch customer Qatar Airways scheduled for the fourth quarter.

The A350 XWB program has achieved more than 2,000 flight-test hours in around 500 flights, making it the highest flying rate ever achieved in Airbus flight tests, with around 80 flight hours per aircraft per month.

Among major tests completed by the Rolls-Royce Trent XWB-powered aircraft are the high energy rejected takeoff (HERTO), high-altitude testing, extreme hot/cold climate testing and water trough testing.

Even after Emirates Airline’s June announcement that it was canceling its order for 70 A350s, the order book for the widebody stands at 742 aircraft with 38 customers, including six lessors.

By June, more than 70% of certification documents had been delivered to the European Aviation Safety Agency (EASA).