What happened
On 23 December 2017, a Britten Norman BN-2A Islander, registered P2-ISM, crashed into a ridge in the Sarawaget Ranges, Morobe Province. The aircraft, operated by North Coast Aviation, was flying from Derim Airstrip toward Nadzab Airport. During the flight, the aircraft struck a ridge at approximately 9,500 feet, descending into the Sapmanga Valley area.
The pilot, who was the sole occupant of the aircraft, was found deceased by rescue teams who reached the site several days later. The impact was severe, destroying the aircraft. The incident was identified after the pilot failed to make a scheduled radio contact with Nadzab Tower, prompting a distress declaration and subsequent search operations.
The investigation
The investigation conducted by the AIC examined the flight path, aircraft condition, and the effectiveness of the emergency response. Investigators analyzed the aircraft's wreckage and determined there were no mechanical failures or prior defects that contributed to the accident. Engine data, specifically propeller blade damage, indicated that the engines were producing significant power at the moment of impact.
Furthermore, the AIC scrutinized the search and rescue (SAR) efforts. The investigation revealed that Papua New Guinea lacked a formal Rescue Coordination Centre (RCC) established in accordance with ICAO Annex 12 standards at the time of the accident. This absence of a structured coordination system, combined with a lack of specialized equipment like winch-equipped helicopters during the initial stages, contributed to significant delays in reaching the wreckage.
Findings
- Cloud build-up along the intended flight path likely forced the pilot to maneuver closer to the terrain to avoid flying into clouds.
- The aircraft experienced controlled flight into terrain after the right wing struck a tree protruding from the forest canopy.
- The impact with the tree caused the right aileron to be dislodged, resulting in a loss of roll control and a steep descent.
- The lack of a functional, legislated Search and Rescue Coordination Centre in PNG hindered the efficiency of the rescue operation.
Safety action
Following the investigation, the AIC issued a recommendation to the Minister for Civil Aviation to ensure the establishment, maintenance, and operation of a dedicated Rescue Coordination Centre. In response, the Minister issued a directive in July 2018 requiring PNG Air Services Limited to operate the RCC, establish operational procedures, and ensure the center is staffed 24/7 by trained personnel to comply with international standards.