The National Transportation Safety Board, which investigated the accident, on Tuesday recommended that Boeing redesign parts of the aircraft's engine cover to prevent it from flying into the aircraft should a fan blade be released on a future flight. It said that all Boeing 737 Next Generation series should be retrofitted with what solution Boeing comes up with.
Boeing has delivered about 6,700 of the 737 NG jets to airlines around the world, but it has stopped taking new orders for them when it changed to 737 Max. It has fewer than 1[ads1]00 NG aircraft yet to build and deliver.
"Our common goal is to prevent similar events from happening in the future," it states.
But Boeing's shares fell as much as 2% immediately after the report was released, though it later received much of that loss.
– CNN's Rene Marsh contributed to this report