The phrase "a test flight on" is correct and usable in written English.
It can be used when referring to a specific test flight that is scheduled or planned to take place on a particular date or location.
Example: "The engineers are preparing for a test flight on Friday to evaluate the new aircraft's performance."
Alternatives: "a trial flight on" or "an evaluation flight on".
SpaceShipTwo broke up in mid-air during a test flight on Friday, killing one of the pilots and seriously injuring the other.
Boeing, based in Chicago, had said that a small fire broke out during a test flight on Nov. 8, forcing one of its six test planes to land in Texas.
Sir Richard Branson on Saturday offered refunds to any would-be astronauts who have paid £150,000 to travel into space after Virgin Galactic's SpaceShipTwo crashed during a test flight on Friday evening, killing one pilot and leaving a second seriously injured.
When Virgin Galactic's SpaceShipTwo disintegrated on a test flight on Oct. 31, killing one of two pilots, debris rained down over 33 miles of desert northeast of Los Angeles, including some pieces landing dangerously close to the public.
At left is an image taken in Herald Square from a test flight on Jan . 13
This was the fuel that Air New Zealand used in 2008 when it became the second airline in the world to conduct a test flight on biojet.
Three days later, Virgin Galactic's experimental SpaceShipTwo broke up 10 miles above California's Mojave Desert on a test flight, killing one of two pilots.
In June 1994, an A330 owned by Airbus on a test flight simulating an engine failure on take-off crashed shortly after leaving Toulouse, killing all seven people on board.
The type's first fatal accident occurred on 30 June 1994 near Toulouse on a test flight when an Airbus-owned A330-300 crashed while simulating an engine failure on climbout, killing all seven on board.
On 24 December 1958, a BOAC Britannia 312 on a test flight crashed at Winkton, killing nine of the passengers and crew on board.
One future passenger on Virgin Galactic's commercial flights into space said the deadly crash of a test flight in the Mojave Desert on Friday has not shaken his desire to journey into space.
