Investigation of a serious aviation incident at Hammerfest airport, ENHF

In the afternoon on 4 November 2024 an S-92 helicopter from Bristow Norway took of from runway 22 at Hammerfest airport. 
At the same time a DCH-8 from Widerøe was 15 nm fra the airport on an approach to runway 04. The airplane intended to circle for landing on runway 22.
Both aircraft received TCAS Traffic Advisory (TA) warning followed by a Resolution Advisory (RA) warning. The helicopter performed an evasive manoeuvre and the DHC-8 performed a missed approach.

The NSIA has received the analysis report from Collins Aerospace. The report show that the TCAS unit functioned as intended during the incident, and provides the NSIA with further information on the sequence of events. The analysis on the course of events of the incident can now be completed. 

The investigation is ongoing. 

The investigation is progressing, and the NSIA has collected the information it considers relevant at this time, except potential data from a TCAS unit. This unit is sent to the producer, Collins, in the US, for analysis. The NSIA awaits this information before the investigation analysis can be completed. The National Transportation Safety Board (NTSB) assists in follow-up of the producer. At this time, the extent of data available on the unit is not clear.

In the meantime, the investigation focuses on other topics, such as air space structure, phraseology and TCAS functions.

Latest update: 18.11.2025