RAF helicopter declares emergency near London as jet sends 7700 ‘squawk code’

A RAF aircraft has declared an emergency at around 2,000ft near LondonA RAF emergency was declared near London after a helicopter squawked 7700.The aircraft, a Boeing-Vertol CH-47 Chinook (SHF482) declared the emergency at 10.15pm on Wednesday, October 7.It declared a general emergency at around 2,000 feet near London.