[MarkR]

The rear mid-cabin exit door assembly separated from an Alaska Airlines 737-9 MAX minutes after take off from Portland on 5 January. The aircraft, registration N704AL, departed Portland (PDX) bound for Ontario, CA (ONT) at 17:06 local time (01:06 UTC +1). The aircraft reached a maximum altitude of 16,325 feet AMSL. It diverted safely back to Portland, landing at 17:26, reaching the gate at 17:30. The flight was carrying 171 passengers and six crew.

https://www.flightradar24.com/blog/a...tes-in-flight/