The chart below plots the volume of NIGHT flights that overflew the stated postcode area during the 31 day Assessment period. Night flights appear louder than those that occur during the day because of; a) lower ambient background noise, and b) sound carries further at night due to cooler air conditions. Also worth noting is that aircraft disturbance at night can be caused by aircraft overflying at heights of 36k feet, especially if they are in close succession.
- The blue line represents all overflying flights, both Day and Night. The axis scale is shown on LHS of the chart i.e. Y-Axis-1.
- The red line represents all overflying flights that occured within the postcode area between 11:30pm and 6:00am daily. This time range is known by UK city and town planners as Night flights. The axis scale is shown on RHS of the chart i.e. Y-Axis-2.
- The orange line represents all overflying flights that occured within the postcode area between 10:30pm and 6:30am daily. This time range is recognised as being anti-social Night flights when the majority the community are at rest. The axis scale is shown on RHS of the chart i.e. Y-Axis-2.