https://www.alaskaair.com/es-us/content/travel-info/our-aircraft/737-900-er
Boeing 737-900ER Aircraft Information - Alaska Airlines
Find aircraft information for all of Alaska Airline's airplanes. Aircraft information includes types of aircraft, aircraft specs, fleet numbers,...
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https://aviationweek.com/air-transport/safety-ops-regulation/faa-recommends-boeing-737-900er-door-plug-inspections
FAA Recommends Boeing 737-900ER Door Plug Inspections | Aviation Week
FAA recommends visual inspections of Boeing 737-900ER mid-cabin door plugs after some operators have found loose bolts during earlier voluntary inspections.
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