US safety regulators have cleared Boeing's 737 Max plane to fly again, lifting grounding orders put in place in March 2019 after two deadly crashes.
It marks a milestone for Boeing which was thrust into crisis by the tragedies and investigations that blamed company failures for the accidents.
Its financial woes deepened this year as air travel slowed due to the virus.
Existing aircraft will need to be modified before going back into service, with changes to their design.
Safety regulator, the US Federal Aviation Administration (FAA), said the clearance would not allow the plane to "return immediately" to the skies.
Alongside the software and wiring changes, pilots will also need training, BBC reported.
