What happened
On August 29, 2025, an Airbus Helicopters EC1SB4, registration LN-ODZ, operated by Fjord Helikopter AS, was conducting a sightseeing flight near the Geirangerfjord. The helicopter was flying at 3,000 feet, following the western side of the fjord to provide passengers with views of the 'Seven Sisters' waterfalls. Simultaneously, a private Grumman American AA-5A, registration LN-KLC, was flying a sightseeing route through the same area at the same altitude, positioned on the eastern side of the fjord.
As the two aircraft approached each other near the Seven Sisters waterfalls, the pilots established visual contact. The pilot of the AA-5A estimated the minimum separation at approximately 200 meters after performing a left avoidance maneuver, while the helicopter pilot estimated the distance between 200 and 300 meters after turning to his left. Although both pilots attempted to call the other via radio, they were unable to establish communication because they were monitoring different frequencies.
The investigation
The Norwegian Safety Investigation Authority (NSIA) examined the airspace structure and communication practices of both crews. The investigation found that the helicopter was using the General Aviation (GA) frequency (123.500 MHz) for blind transmissions, a common practice in the area. Conversely, the pilot of the AA-5A remained on the Møre Approach frequency, despite being outside controlled airspace.
Furthermore, the investigation noted a lack of electronic visibility. While the helicopter utilized a 'Safe Sky' application to broadcast its position, the AA-5A lacked modern electronic visibility tools beyond standard Mode A/C transponder capabilities. The NSIA also noted that the area is frequently crowded with various types of traffic, including commercial helicopters, private aircraft, and high-speed military jets.