Now that's what you call airplane mode -- an iPhone that plummeted 16,000 feet (5,000 metres) from an Alaska Airlines flight landed without a single crack in the screen and even a battery still half-charged.

The phone was sucked out of Alaska Airlines Flight 1282 on 5 January when a fuselage panel blew off, leaving a gaping hole. The passenger plane made an emergency landing shortly after, with all aboard safe.

A few items, reportedly including AirPods and a boy's shirt, made more dramatic landings after shooting out of the suddenly depressurised cabin.

Amid a search for debris, a man named Sean Bates in the northwestern state of Washington found an iPhone on the side of the road, appearing to belong to one of the passengers.

A photo of the device posted on X, formerly Twitter, on 7 January showed the intact screen and an emailed $70 baggage receipt. The battery is shown charged to 44% and the smartphone remains on flight mode.

Aside from the port, where the terminal of the charger protrudes after being ripped from the rest of the cord, the phone appears untouched.

In a follow up TikTok post, Bates said he'd found the phone "pretty clean, no scratches on it, sitting under a bush."

Bates said he contacted the National Transportation Safety Board, which told him it was the second phone from the flight to have been found.

NTSB Chair Jennifer Homendy replied to his post on X thanking him and offering to meet.

In a briefing on 7 January, Homendy told reporters, "We'll look through [the phones] and then return them," adding that it was "very, very fortunate" that the incident had not ended in tragedy.

In response to the incident, regulatory bodies swiftly grounded some versions of Boeing's 737 MAX 9 jet, pending inspections.