Air ambulance night flights begin from Cambridge Airport
Night flights by the East Anglian Air Ambulance are to start from Cambridge Airport later this year.
Rapid response helicopters attend incidents across Bedfordshire, Cambridgeshire, Peterborough, Norfolk and Suffolk.
Airport deputy chairman Terry Holloway said: "Some local residents might notice the noise.
"Flights are undertaken outside normal operating hours for training and to support humanitarian operations."
The East Anglian Air Ambulance has been based at Cambridge Airport for four years.
The East Anglian Ambulance Service said flights would begin when crews are trained for night flying and that would be later this year.
Permission had been granted for training operations to start from 18 September.