Three crew members were killed in the crash of a British Royal Navy military helicopter. The incident occurred near the village of Sourton Down, on the northwestern edge of Dartmoor National Park in the county of Devon.
The aircraft involved in the crash was an AgustaWestland AW101 Merlin HC4 transport helicopter, primarily used by the Navy for troop transport and tactical operations. At the time of the accident, the aircraft was on a routine night training flight originating from the nearby naval base RNAS Yeovilton in Somerset or the naval base Devonport.
Immediately after the crash, regional emergency services, including Devon and Cornwall Police, ambulance units, and Dartmoor Mountain Rescue, launched a large-scale search and rescue operation. Authorities cordoned off a wide area around the crash site in the rugged, hilly terrain. However, it was too late for the three crew members, all experienced naval airmen; they were pronounced dead at the scene. The British Ministry of Defence confirmed the loss of the crew and expressed its condolences to their families, but initially withheld further details regarding the identities of the deceased.
The exact cause of the crash of the heavy three-engine helicopter remained completely unclear immediately after the incident. The Defence Accident Investigation Branch (DAIB), the UK Ministry of Defence's specialized accident investigation unit, has launched an investigation and dispatched a team of experts to the crash site to secure the wreckage and analyze the flight data recording equipment. The investigation is focusing on possible technical defects in the engines or rotor control system, as well as the visibility and weather conditions prevailing in southwest England at the time of the accident.
The Merlin HC4 is a modernized version of the proven transport helicopter, specifically optimized for the Royal Marines' amphibious operations and featuring, among other things, foldable main rotors and a modified cockpit. Operated by the Commando Helicopter Force, the fleet is considered one of the UK's most important pillars of global troop transport. The crash in Devon represents one of the worst accidents involving British naval aviators in recent years and has sparked a debate throughout the Royal Air Force about safety reviews of ongoing training programs.