North Weald Airfield (ICAO: EGSX) is an operational general aviation aerodrome, in the civil parish of North Weald Bassett in Epping Forest, Essex, England. It was an important fighter station during the Battle of Britain, when it was known as the RAF Station RAF North Weald. It is the home of North Weald Airfield Museum. It is home to many private aircraft and historic types, Essex & Herts Air Ambulance helicopter and is an active flight training airfield.