The phrase "a test fly" is correct and usable in written English.
It can be used when referring to a trial or experimental flight, often in the context of aviation or testing new aircraft.
Example: "The engineers conducted a test fly to evaluate the aircraft's performance under various conditions."
Alternatives: "a trial flight" or "an experimental flight".
This year, the Australians, armed with only a $2 million budget, beat a NASA team armed with $180 million and became the first to test fly a rocket powered by a "scramjet".
The three-stage rocket, which North Korea said was carrying a communications satellite but outside observers called part of a missile test, flew for just over a minute before crashing into the Yellow Sea, Japanese officials said.
Airbus's claim that it can save the world with the A380 may be far-fetched, but its "gentle giant" plane is far more efficient and quieter than those of 20 years ago and Virgin is even planning to test fly a 747 on biofuel.
When they are given the choice between the two colors in a subsequent test, flies show significant conditioned approach to the previously rewarded color.
I sent someone down to test fly it... Mark happened to go with this guy..
"He's already shown himself capable of holding his own as a Test fly-half and, if he continues to show the same outstanding level of application, he'll go from strength to strength".
To test avionics intended for the JAS 39, such as the fly-by-wire controls, a Viggen was converted to operate as a test aircraft, flying by January 1983.
Finding a Test quality fly-half has been a conundrum for the Wallabies in the post-Larkham era, so much so they actually picked a winger, James O'Connor, at 10 against the 2013 British and Irish Lions.
After four years of design and development, ATG began building a prototype in early 2004, and a test pilot flew the Javelin for the first time last September.
To demonstrate the performance of the testbed, a test formation flying scenario comprising formation acquisition and keeping in a low earth orbit (LEO) has been established.
Putting the unit's theory into night-time practice in Beaufighters and Mosquitoes, he developed an interest in test flying.
