The phrase "airspace that" is correct and usable in written English.
It can be used when referring to a specific type or category of airspace in discussions about aviation, regulations, or air traffic control.
Example: "The airspace that surrounds major airports is heavily regulated to ensure safety."
Alternatives: "airspace which" or "airspace in which".
But you're imposing taxes on flights through their own airspace — that is not European Union airspace.
Following intense discussions with engine and aircraft makers, British airspace that was unsafe under the old regime 24 hours ago was redesignated as acceptable for passenger flights.
When it reached the ambulance with no body, the truck paused, "Taps" sounded, and five police helicopters passed overhead through airspace that was not there nine months ago.
The sites under consideration have long runways and airspace that can be easily segregated to allow spaceplane flights to operate alongside normal aviation.
American officials said there have been continued flights from Iran to Syria through Iraq's airspace that are believed to have carried military supplies to support the embattled government of Bashar al-Assad.
The leader of the group faces up to life in prison for his role in a Cuban air force attack on private planes in international airspace that killed four Americans.
Although this breakage may result in a slight loss of total surface area, it will likely lead to a few enlarged airspaces that are surrounded by smaller, intact ones.
Therefore, a histological method of measuring airspace enlargement that is specifically sensitive to the presence of the largest airspaces is desirable for detecting such a disease state.
On Tuesday, negotiators agreed to allow the national governments a veto power over the new airspace blocks that touch their borders.
Even as the "Cancelled" signs were scrolling on the airport departure screens, the vultures started circling – subject, of course, to the restrictions imposed by the scary airspace maps that showed a big red splodge where Scotland normally appears.
Chest CT scans assess lung density, which is proportional to lung airspace enlargement that defines emphysema.
