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[$$] The Aerospace Newcomer Whose Data Helped Make the Difference on Grounding the 737 MAX

When the Federal Aviation Administration reversed course and grounded Boeing Co.’s 737 MAX jetliner, it moved partly after seeing data from a little-known aerospace newcomer that is changing the way the aviation industry tracks planes. Aireon LLC, based in McLean, Va., was founded less than a decade ago—the brainchild of satellite maker Iridium Communications Inc. and Canada’s air-traffic managers. It collects and then distributes to partners, including air-traffic-control providers around the world, some of the operational data that passenger jets automatically send out in real time.