Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of 40 decibels i.e. a quiet residential area. If your property is located near to a busy road i.e. 70-75 decibels, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Airborne aircraft noise is typically in the range of 45dB - 65dB for heights below 26,000 feet and for a duration of 30-50 seconds. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

05/02/2025 19:29:14

UK Postcode

LINDFIELD , WEST SUSSEX , RH16 1SL

Baseline geo-coordinates

51.0165 , -0.098674

Survey type

31 days prior to: 01-Sep-2024 @00:50:56

Assessment band

FREQUENT

Assessment actual value

12.99

Assessment description

Likely to encounter both night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,867 / 92.5 / 5.4 ✔

Flights above 26k feet.

336 / 10.8 / 0.6 ✔

Flights between 16k and 26k feet

52 / 1.7 / 0.1 ✔

Flights between 13k and 15k feet

7 / 0.2 / 0.0 ✔

Flights between 7k and 12k feet

1,430 / 46.1 / 2.7 ❌ (544)

Flights between 6k and 7k feet

916 / 29.5 / 1.7 ❌ (149)

Flights between 5k and 6k feet

74 / 2.4 / 0.1 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

13 / 0.4 / 0.0 ✔

Flights below 3k feet

33 / 1.1 / 0.1 ✔

4 or more flights per hour

273 / 8.8 ❌ (202)

9 or more flights per hour

70 / 2.3 ✔

Departures between 1.5k and 15k feet

5 / 0.2 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

53 / 1.7

Between 1am and 2am

22 / 0.7

Between 2am and 3am

13 / 0.4

Between 3am and 4am

19 / 0.6

Between 4am and 5am

17 / 0.5

Between 5am and 6am

18 / 0.6

Between 6am and 7am

78 / 2.5

Between 7am and 8am

135 / 4.4

Between 8am and 9pm

2,262 / 73.0 / 5.2

Between 10pm and 11pm

107 / 3.5

Between 11pm and Midnight

119 / 3.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

25 ✔

Percentage of overflying occuring Out-Of-Hours and at Weekends

48 ❌ (43)

Minimum avg. distance in miles

0.49

Number of possible disruptions by; day / out-of-hours / hour

76.0 / 37.0 / 4.0 ❌ (67)

Flight holding stack identified?

Yes ❌

Altitude for all flights

10,688 ❌ (17,529)

Altitude of departures between 1.5k and 15k feet

7,324 ❌ (8,474)

Altitude of flights below 20k feet

7,234 ❌ (8,833)

Busiest times of day
(Distruption: 0 - low, 25+ high)

Day of week, time, frequency and number of flight events.

14.40

Wednesdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

13.70

Wednesdays between 19:00 and 20:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.50

Wednesdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

11.00

Saturdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.80

Wednesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.30

Wednesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:6 flight events.

10.20

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.90

Wednesdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:6 flight events.