Papua New Guinea's Accident Investigation Commission has begun an investigation into yesterday's airplane crash in Madang which killed 28 people.
An Airlines PNG Dash-8 aircraft crashed near the mouth of the Gogol river, about 30 kilometres south of Madang in the late afternoon.
The Commission's chief executive, David Inau, says the stormy weather conditions at the time of the crash are a factor that investigators will look at.
"The total people on the aircraft were thirty-two. We have four survivors. The bodies (of the dead) are being recovered as we speak. The survivors are in hospital in Madang. One is in critical (condition). The others are ok."
Airlines PNG has grounded its fleet of 12 aircraft until further notice.