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Investigation of aircraft accident at Sognesand, Sandnes Municipality, Rogaland County, Norway

On 16 November 2020 LN-OAX, an Airbus helicopters AS 350 B3, lost control during delivery of concret to a powermast fundament.

The aircraft was performing external load flights with delivering of concrete to a powerline fundament. During delivery of concrete to powerline mast number 49, the pilot experienced severe vertically vibrations. The pilot took immediate action, released the external load and was capable to manoeuvre the helicopter away from the construction area. During this operation the helicopter lost altitude and hit some threes. The helicopter stopped laying on the right-hand side about 33 meters from the construction area. No persons were seriously injured.

After initial inspection at the accident site the helicopter has been transported to the Norwegian Safety Investigation Authority's facilities in Lillestrøm, Norway for further examinations.


Photo: NSIA

Update 28 January 2021

NSIA publishes a preliminary report to update on both factual information and the progress related to the aircraft accident.

The cause of vibrations is still unknown, and the investigation is ongoing. NSIA has removed the Vehicle and Engine Monitoring Display (VEMD) together with the Engine Digital Engine Control Unit (DECU) for read out by the Accident Investigation Board in France, Bureau d'enquêtes et d'analyses pour la sécurité de l'aviation civile (BEA). NSIA has inspected the helicopters flight controls, including servos but have not yet concluded about the result. The investigation continues with additional inspections and examinations. 

Latest update: 28.01.2021

Facts

Location Sognesand, Sandnes Municipality, Rogaland County, Norway
Occurrence date 16.11.2020
Aircraft Airbus Helicopter AS 350 B3 Ecureuil
Operator Heli-Team AS
Registration LN-OAX
Meteorological conditions VMC
County Rogaland
Type of occurrence Accident
Type of operation Commercial, other
Category of operation Light, helicopter (<= 2 250kg)
Aircraft category Helicopter, Single-engine, Turboprop/turboshaft
FIR/AOR ENSV (Stavanger ATCC)

Reports - same aircraft model

Reports - same category of operation