The airline said the plane, which was involved in a collision with another aircraft earlier this year, had "landed short of the runway".
Nine Filipinos on board an Air Niugini plane that crash-landed in the South Pacific nation of Micronesia were all safe, the Department of Foreign Affairs (DFA) said Saturday.
"I thought we landed hard", he said.
Residents in small boats rushed to the crash site to save passengers and crew members from the sinking aircraft, an official said. "One would think they might be afraid of approaching the plane that's just crashed".
However the company is now stating that it was unable to account for one male passenger, following the incident on Friday which saw the plane take a splash landing in the Pacific lagoon.
"Careful because I don't know how deep this is", one man said as the camera moves inside the half-sunk plane, the team sloshing past rows of seats submerged up to the armrests."I thought "this is not the way it's supposed to happen".
Footage has emerged of United States navy sailors embarking on a rescue mission in the aftermath of the plane crash - using an inflatable boat to shuttle people ashore before the plane sank in about 100ft (30m) of water.More news: Graham rips Dems for turning Kavanaugh hearing into 'unethical sham'
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The sequence of events remains unclear.
Jaynes said those aboard managed to wade through waist-deep water to the emergency exits on the sinking plane.
"I was really impressed with the locals who immediately started coming out in boats", he said in an interview with a missionary in Chuuk, Matthew Colson, that was posted online and shared with the AP.
An airline is missing a passenger following an incident which caused the plane to hit a lagoon while trying to land.
The clip shows sailors using the aircraft's right wing as a makeshift mooring for the boat.
Air Niugini is the national airline of Papua New Guinea and has operated since 1973.
Papua New Guinea's Accident Investigation Commission (AIC) said it was preparing to send investigators to Weno.