Past Strains Between Boeing, FAA Threaten MAX Simulator Plans

FAA experts who were mocked by plane maker’s staff are tasked with approving new training regimen

As Airbus is set to overtake Boeing to become the world’s largest plane maker by deliveries, WSJ explains how two jetliners—the 737 MAX and the A320neo—ended up at the center of the biggest rivalry in the aviation world. Photo illustration: Jaden Urbi

Plans to mandate simulator training for pilots before Boeing Co.’s 737 MAX can return to service—already a time-consuming and costly undertaking—could face a further complication: personal friction between the plane maker’s staff and U.S. government officials.

Internal Boeing messages recently made public amid House and Senate investigations showed company pilots ridiculing their counterparts at the Federal Aviation Administration.

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