“We will honor them by holding close the hard lessons learned from this chapter in our history to ensure accidents like these never happen again,” he said.
Now that the F.A.A. has lifted its grounding order, regulators around the world are expected to follow suit, though some may take their time in wrapping up their own in-depth reviews. The agency has worked with its counterparts in Canada, the European Union and Brazil on revised pilot training requirements for the Max.
Even in the United States, it could be months before the Max starts carrying passengers again. The F.A.A. must still approve pilot training procedures for each U.S. airline operating the Max, planes need to be updated, and airlines suffering from a huge decline in traffic during the pandemic may feel little urgency to act quickly.
On an investor call last month, the American Airlines chief executive, Doug Parker, predicted that the carrier would not resume Max flights before late December if the order came in November. Southwest Airlines and United Airlines have said they probably will not fly the plane until next year.
“United’s Max fleet won’t return to service until we have completed more than 1,000 hours of work on every aircraft, including F.A.A.-mandated changes to the flight software, additional pilot training, multiple test flights and meticulous technical analysis to ensure the planes are ready to fly,” the airline said in a statement, adding that it expects to start flying the plane in the first quarter of next year.
The Air Line Pilots Association, which represents nearly 60,000 pilots in North America, including those at United and Delta, said in a statement that it is still reviewing changes to training procedures, but said that the proposed engineering fixes “are sound and will be an effective component that leads to the safe return to service of the 737 MAX.”
Nonetheless, the F.A.A. decision removes some uncertainty as Boeing seeks to rehabilitate its reputation, start fulfilling longstanding orders for the Max and gauge how soon and how fully air travel will recover.