A fourth engine will be assembled and tested in 2014.

The newly developed engine was first tested on a dynamometer in May 2003.

The first engine was built in summer 2002 and tested in the autumn.

On 27th March 2013 the engine was successfully tested under vacuum conditions.

However, the engine was not tested in an aircraft before the end of the war.

The engines had been tested just before they left.

After the race, he said, the engine was tested at the speed he wanted to set and lasted longer.

Entire engines could be built and tested at their factory before delivery.

On 28 February 2006 the engine was tested for the first time with the propeller installed.

This was the first time the main engines had been tested since they were installed in Discovery.