Oregon teacher finds fuselage from Boeing 737 Max 9 in his back yard

No data on cockpit voice recorder, official says, because it had been overwritten after two hours

A chunk of fuselage that blew out of a Boeing 737 Max 9 aircraft during an Alaska Airlines flight has been found in a teacher's back yard, the US's transportation safety board (NTSB) has said.

The plug door tore off the left side of the jet on Friday after takeoff from Portland, Oregon, en route to Ontario, California, depressurising the plane and forcing the pilots to turn back and land safely with all 171 passengers and six crew onboard.