Squadron, attached to and based at the Shearwater Heliport crashed in the Ionian Sea during a NATO Mediterranean exercise, killing all six crew members aboard. As a result, all Cyclones in service were placed on an "operational pause" until it was lifted on 16 June 2020. An investigation attributed the accident to the electronic control system and fly-by-wire control law known as "Command Model Attitude Bias Phenomenon." This resulted in the CH-148 responding insufficiently to pilot inputs when the flight director was engaged. The investigation concluded that manufacturer-supplied materials contained "misleading or confusing" information, incomplete sections on automated and lacked manoeuvre descriptions. The recommended fix was to modify software governing the electronic flight control laws and enhance flight mode annunciation and awareness to the crew. Specifications See also References External links CH-148 Cyclone page Canadian Forces official webpage for the CH-148 Cyclone Canadian Forces Maritime Helicopter Project (MHP) webpage Military helicopters H-92 Superhawk H-148 2000s United States helicopters Twin-turbine helicopters H-148 Aircraft first flown in 2008