S regulators on Wednesday to put its 737 max back in the skies.

It comes after the jet was grounded last year following two fatal crashes.

346 people were killed within five months in 2018 and 2019 when to Max planes crashed in Indonesia and Ethiopia.

He led to scores of investigations and cost the company around $20 billion.

The subsequent 20 month grounding has been the longest in commercial aviation history.

The Federal Aviation Administration will now demand new pilot training and software upgrades to deal with a store prevention system called M CAS.

In both crashes, M CAS repeatedly shove down the jets noses.

Pilots struggled to regain control.

The F A A has also said it would no longer allow Boeing to sign off on the airworthiness of some 450 already built 737 maxes.

Instead, it plans on in person inspections that could take a year, or mawr to complete.

Since the planes grounding a number of probes of heavily criticized Boeing's development of the max, A report by the U.

S House of Representatives said it made faulty design and performance assumptions.

It also said Boeing concealed the very existence of them cats from 737 max pilots.

It accused the plane maker of withholding crucial information from the A, its customers and 737 max pilots.

With the return to service now confirmed, Boeing is taking no chances, sources said.

The company will run a 24 hour war room to keep track of all Max flights for issues that could impact the Jets return.