https://www.radioworld.com/columns-and-views/the-fm-band-from-30000-feet-in-the-air I've never done this with FM radio, but with a portable, 3" B&W LCD pocket TV in 1988. The pilot wouldn't let me extend the telescopic whip in the plane, so with just 3" of retracted antenna I was still able to get every Allegany County's, WNY, PBS TV translators and Buffalo's VHF WKBW-TV7, direct from their 1,000ft Colden, NY tower crystal clear. Did not pick up the two lower VHF Buffalo, NY channel 2 and 4, or the Grand Island based UHF stations WNED-TV17 and WUTV-TV29. Nothing, from the Rochester, NY based stations. Still, a neat experiment.