The phrase "aired a segment" is correct and usable in written English.
It can be used when referring to the broadcasting of a specific part of a television or radio program.
Example: "The network aired a segment on climate change during the evening news."
Alternatives: "broadcast a segment" or "transmitted a segment".
"America's Most Wanted" aired a segment about the cases this year.
In 1996, the ABC News show "Turning Point" aired a segment titled "Deadly Game," about wildlife conservation in Africa.
It turned out that Bill O'Reilly's Fox News show had just aired a segment on crime in Chicago.
On a recent morning, the local radio station aired a segment on the proper installation of flue liners.
But on Saturday, after the television program "America's Most Wanted" aired a segment about Mr. Salley, Janet, Mr. Office and 49 other viewers called in tips.
On Tuesday, HBO aired a segment about the various racism and discrimination allegations against the club on its Real Sports with Bryant Gumbel.
A few months ago, following an aggressive online campaign by liberal Pakistanis, Khan herself was fired as a morning-show host on Samaa TV for engaging in so-called moral policing and airing a segment in which she chastised unmarried couples out on dates in Karachi's parks.
Tonight, "60 Minutes" is airing a segment on Apple, in which interviewer Charlie Rose talks with CEO Tim Cook about running a modern-day tech giant and the challenges the company faces daily, from a world filled with terrorists to criticisms that its manufacturing operations in China have everything to do with low-wage workers.
NBC's "Today" is under fire for airing a segment that shamed moms who post breastfeeding photos on social media.
Conan issued a special online apology to Jimmy Kimmel Wednesday evening after airing a segment that showed Sarah Palin shooting Rudolph the Red-Nosed Reindeer--the same clip Team Kimmel played on their show two weeks earlier.
Just days later, CBS would air a segment titled "Five Things You Should Know" about Sen. John McCain, featuring such trivia as McCain's high school nickname, television and movie cameos, and enjoyment of bird-watching and comedian Sacha Baron Cohen's fictional character Borat.
