In a backyard, they announced that they had located the portion of the door that detached from an Alaska Airlines Boeing 737 Max mid-flight last Friday, US officials said.

The door section was discovered in his backyard Sunday by a teacher at a Portland school in the Cedar Hills neighborhood, said US National Transportation Safety Board (NTSB) chairwoman Jennifer Homedy.

The door detached after takeoff from Portland, Oregon, en route to Ontario, California, scaring passengers and forcing the pilots to turn back.

@strawberr.vy Girls’ trip turned into emergency landing trip… #alaska #alaskaair ♬ original sound – vy 🍓

The plane, with 171 passengers and six crew members, landed safely.

After the 9th incident the US Federal Aviation Administration (FAA) on Saturday ordered the temporary grounding of 171 Boeing MAX 9 aircraft that carry the particular panel that weighs about 27 kilograms and covers an optional exit door.