US authorities say more Boeing 737 planes should get checks after door plug blowout

FAA says all airlines operating Boeing 737-900ER jets should inspect door plugs to ensure they are properly secured

The US Federal Aviation Administration late Sunday recommended airlines operating Boeing 737-900ER jets inspect door plugs to ensure they are properly secured after some operators reported unspecified issues with bolts upon inspections.

The recommendation follows the FAA’s grounding of 171 Boeing 737 Max 9 planes after the 5 January mid-air cabin blowout of a door plug on an eight-week-old Alaska Airlines Max 9 jet .