The aircraft was performing a night training mission at the moment it disappeared from radar.

The aircraft performed well during a 20-minute test flight, with the only concern being the length of the takeoff run.

However, the aircraft performed so consistently that the preliminary tests stopped after 16 flights.

The aircraft performed well and, in the main, its life was uneventful, although not so on one trip however.

Before takeoff, the aircraft perform an elephant walk to the runway.

The first eight aircraft are now performing flight and ground tests.

Each aircraft performs differently and, therefore, has different performance numbers.

These aircraft are multi-purpose, but will perform emergency responses when required.

Both aircraft performed steep banks to avoid one another, under the control tower's direction.

While the aircraft performed well, its range significantly impaired it.