New video of plane crash emerges as search launched for missing passenger

A search has been launched at a lagoon in Micronesia where a Boeing 737 crash-landed over 100m short of an airport runway on Friday (local time).

Air Niugini initially reported that all 47 passengers onboard the flight made it out of the aircraft safely and were rescued by nearby boats, but now the airline's chairman says one passenger is unaccounted for.

"An inspection of the entire submerged cabin of the aircraft by the US Navy seals, further corroborated by other eyewitness reports who saw the passenger board one of the dinghies on Friday," Sir Kostas Constantinou said in a post on the airline's Facebook page.

Despite the eyewitness reports, search teams have begun looking for the missing passenger.

Initial reports suggest poor visibility at the time played a part in the incident.