I woke up Friday morning to the message I’d been expecting: “Your account, @Justin_Ling has been locked for violating the Twitter Rules.”Below was the offending tweet: a link to one of the few websites that provide real-time private jet flight data that “chief twit” Elon Musk, I wrote, “hasn't bullied into suppressing his flight data.”Musk has accused these flight trackers of providing “basically assassination coordinates.” He has launched a crusade against these apps and anyone who shares them on his recently acquired social media platform.Accounts like mine were locked, while others were banned entirely—from the @ElonJet bot, which shared the location of Musk’s private plane, to reporters who picked up on his campaign.In so doing, he’s taking aim at an incredibly valuable source of information—which has helped researchers, journalists, and experts with everything from tracking Russian oligarchs to investigating the fate of missing aircraft to tracking down international hitmen.Both real-time and historical information on Musk’s main private jet—a 2015 Gulfstream G650ER, tail number N628TS—is conspicuously missing from the two main flight-tracking platforms: FlightAware and FlightRadar24.FlightAware reports that its real-time data on Musk’s jet is unavailable “due to European government data rules,” while its historical data about the plane’s comings and goings was removed “per request from the owner/operator.” Looking up Musk’s jet on FlightRadar24 returns the message: “we could not find data.”Even smaller tracking platforms, like AirportInfo—the account that led to my Twitter being locked—have taken Musk’s flight information offline."