Gatwick Airport has launched a public consultation on its plans to use its emergency runway for routine flights.
The plans will see the standby runway - which is currently used as a taxiway or when the main runway is closed - used for departures of smaller planes.
Consultation over "dual runway operations" at Gatwick by 2029 follows a dip in traffic due to the pandemic.
Local campaigners condemned the plans after concerns were previously raised over noise, congestion and air quality.
Gatwick first announced the proposals in October 2018.