NE OF THE GREAT perks of private aviation is right there in the name: privacy. But the ability to stay hidden from prying eyes applies only inside the cabin. Social-media accounts that broadcast flight patterns of noteworthy names—including Drake, Taylor Swift, Nancy Pelosi, Kim Kardashian and LVMH chairman Bernard Arnault, as well as numerous sanctioned Russian oligarchs— have racked up millions of followers, with the Twitter handle @ElonJet
