Two Men Found Dead In NSW Plane Crash Wreckage

Two men -- believed to be father and son -- have been found dead after their plane crashed in dense bushland on the NSW north coast.

The wreckage of the crash was found by the Westpac rescue helicopter on Saturday morning in the Dorrigo National Park around 27 kilometres west of Coffs Harbour.

Attempts to reach the plane were hampered by bad weather, with rain and low cloud preventing the chopper from winching a person down to the crash site.

Chief Inspector Brendan Gorman said police had spent the morning trying to reach the plane through the difficult terrain.

"It's steep and heavily wooded terrain extremely difficult to get through," Gorman said.

Police have since reached the site and sadly confirmed the two men on board, one believed to be aged in his 50s and the other in his 20s, were found dead aboard the plane.

"Police are in the process with the assistance of crime scene and police rescue of recovering the bodies from that wreckage, the crime scene will then be held for the ATSB to conduct their investigation," Gorman said.

Their small, four-seater Mooney 20 aircraft vanished on Friday morning around 90 minutes after departing from Murwillumbah.

It was expected to arrive in Taree less than two hours later but when it didn't, friends of the pilot quickly raised the alarm.

The two men on board have yet to be formally identified, but police believe they were a Gold Coast father and son.

Their family is being notified by authorities.

The Australian Transport Safety Bureau has begun its investigation into the crash and has asked for any witnesses who may have seen or heard the aircraft flying around the Mount Moombil/Dorrigo National Park area on Friday to contact authorities.

The wreckage, weather, aircraft and pilot records and any available recorded data will all form part of the investigation, the Australian Transport Safety Bureau said on Saturday.

Featured Image: Westpac Rescue Helicopter