Le 8 janvier, heure locale, Alaska Airlines a déclaré dans un communiqué qu'en raison de l'immobilisation au sol du Boeing 737 MAX9, environ 140 des vols de la compagnie avaient été annulés ce jour-là. À l'heure actuelle, l'accident de vol survenu le 5 sur un avion du même modèle de la compagnie fait toujours l'objet d'une enquête. L'Indonésie et d'autres pays ont annoncé le 8 qu'ils immobiliseraient temporairement le modèle d'accident de Boeing.
On the 8th, the Indonesian Ministry of Transport issued a statement stating that due to the impact of the Alaska Airlines flight accident in the United States, Indonesia has temporarily grounded three Boeing 737 MAX9 passenger aircraft since January 6. According to local media reports on the 8th, Turkish Airlines decided to ground all five Boeing 737 MAX9 passenger aircraft it operates until the relevant technical investigation procedures are completed. Par ailleurs, des compagnies aériennes de nombreux pays, dont le Mexique et le Panama, ont annoncé l'immobilisation temporaire de ce type d'avions.
On the 5th, an Alaska Airlines Boeing 737 MAX9 passenger plane had an emergency door fall off shortly after takeoff and made an emergency return flight. Heureusement, aucune victime n’a été à déplorer. The next day, the U.S. Federal Aviation Administration ordered the temporary grounding of Boeing 737 MAX 9 passenger aircraft operated by American Airlines or within the United States to conduct safety inspections of the aircraft.
On the 7th, the U.S. Federal Aviation Administration issued a statement stating that the 171 Boeing 737 MAX9 passenger planes that have been grounded will continue to be grounded until the agency confirms that the relevant passenger planes are in a safe condition. On the same day, Alaska Airlines and United Airlines, two American companies that operate this type of passenger aircraft, canceled a total of 400 flights. Late on the night of the 7th, the U.S. National Transportation Safety Board announced that a teacher in Portland discovered a door that had fallen off the accident airliner in his backyard. In addition, investigators said that the flight data recorder and cockpit voice recorder of the accident passenger plane have been sent to relevant laboratories to read the data. Cependant, les données pertinentes de l'enregistreur vocal du cockpit ont été écrasées par de nouvelles données.