An official with the airport told RNZ Pacific 36 passengers and 11 flight crew members were onboard the aircraft.
A Boeing 737 crash-landed into Chuuk Lagoon in the Federated States of Micronesia as it attempted to land at Weno International Airport on Friday.
Pictures and video posted on social media showed locals scrambling in small boats to rescue the passengers and crew as waters covered most of the aircraft's fuselage.
The passengers and crew were taken to hospital for a checkup, with the airport authorities saying that the incident did not result in any major injuries.
Chuuk Lagoon surrounding Weno Island in the n the Federated States Of Micronesia.
No serious injuries were reported among those traveling on a Boeing 737 that landed about 150 yards short of a runway off the coast of Micronesia, according to the Federal Aviation Administration.More news: NFL's Panthers sign Eric Reid, who joined Kaepernick in anthem protests
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The plane was scheduled to stop in Chuuk on its way from Pohnpei to Port Moresby.
Air Nuigini is Papua New Guinea's national airline.
RNZ Pacific's correspondent Giff Johnson said small boats quickly went out to help rescue passengers from the plane before it sank in the waters off the runway in the Chuuk capital, Weno.
It is unclear what caused the crash.
"We're trying to arrange a team to go there but I can not give you any more information because I simply don't have it", a spokesman told AFP.
Australia's ABC reported that Papua New Guinea's Accident Investigation Commission was preparing to send a team to the accident site.