A woman has described the moment she heard the a strange-looking aeroplane-cum helicopter in the sky above her home in Walkley.
Residents across the city reportedly spotted the distinctive aircraft flying over their homes on Tuesday.
Residents took to social media, where one wrote wrote: “I thought it was my washing machine making that noise at first!”
They identified it as a Bell Boeing V-22 Osprey, a type of aircraft that has tilt rotors meaning it can perform both vertical and short take offs and landings.
The Bell Boeing V-22 Osprey is an American multi-mission, tiltrotor military aircraft with both vertical takeoff and landing (VTOL) and short takeoff and landing (STOL) capabilities. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The United States Air Force UK Osprey unit is based at RAF Mildenhall in Suffolk.