Airline pilots are calling for tests to be carried out to find out what would happen if a drone hit a passenger jet.
The British Airline Pilots Association wants research to be carried out after 23 near misses between aircraft and drones were investigated in six months.
In April 2015, order a military Lynx helicopter was forced to conduct an “evasive manoeuvre” to avoid hitting a drone over Hambrook, South Gloucestershire.
The pilot said the object passed just one rotor span down the side of the helicopter.