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If not corrected, the seats could injure passengers and crew members during an emergency landing or block the aisle and slow an evacuation, the agency said.

An aerial view of several Boeing 737 MAX airplanes parked at King County International Airport-Boeing Field in Seattle, Washington, United States on June 1, 2022. (Reuters/Lindsey Wasson)

The US Federal Aviation Administration said on Monday that seats on hundreds of Boeing 737 MAX jets registered in the US may require inspections in case they were incorrectly installed and needed to be fixed. If not corrected, the seats could injure passengers and crew members during an emergency landing or block the aisle and slow an evacuation, the agency said.

The FAA's proposed airworthiness directive issued on Monday would apply to 453 jets registered in the US The agency only has jurisdiction over US airlines, but foreign regulators typically follow FAA directives if applicable.