Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of between 30 and 40 dBs i.e. a quiet residential area. Typically the noise from an overflying aircraft is between 50-65 dBs. If your property is located near to a busy road i.e. 70-75 dBs, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Overflying aircraft noise typically has a duration of 30-50 seconds, the higher the plane the longer the duration. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

18/02/2026 22:57:26

UK Postcode Area

COLGATE-0226, WEST SUSSEX, RH13 6HT

Baseline geo-coordinates

51.0737 , -0.230012

Survey type

31 days prior to: 15-Feb-2026 @22:14:03

Assessment band

MINIMAL

Assessment actual value

3.67

Assessment description

Might encounter some day-time irregular noise disturbances that are caused by the volumes of planes overflying.

Band range

Lower: 0.5 --> Upper: 4.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,189 / 38.4 / 2.3 ✔

Flights above 26k feet.

734 / 23.7 / 1.4 ✔

Flights between 16k and 26k feet

182 / 5.9 / 0.3 ✔

Flights between 13k and 15k feet

119 / 3.8 / 0.2 ✔

Flights between 7k and 12k feet

111 / 3.6 / 0.2 ✔

Flights between 6k and 7k feet

10 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

0 ✔

Flights between 3k and 4k feet

15 / 0.5 / 0.0 ✔

Flights below 3k feet

14 / 0.5 / 0.0 ✔

4 or more flights per hour

6 / 0.2 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

103 / 3.3 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

4 / 0.1

Between 1am and 2am

2 / 0.1

Between 2am and 3am

2 / 0.1

Between 3am and 4am

4 / 0.1

Between 4am and 5am

6 / 0.2

Between 5am and 6am

12 / 0.4

Between 6am and 7am

65 / 2.1

Between 7am and 8am

118 / 3.8

Between 8am and 9pm

908 / 29.3 / 2.1

Between 10pm and 11pm

34 / 1.1

Between 11pm and Midnight

9 / 0.3

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

15 ✔

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

46 ❌ (44)

Minimum avg. distance in miles

0.47

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

4.0 / 2.0 / 0.2 ✔

Flight holding stack identified?

No

Altitude for all flights

26,839 ✔

Altitude of departures between 1.5k and 15k feet

13,375 ✔

Altitude of flights below 20k feet

12,479 ✔

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

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

2.50

Sundays between 13:00 and 14:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

5.25

Thursdays between 20:00 and 21:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

4.50

Tuesdays between 15:00 and 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.25

Wednesdays between 15:00 and 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.00

Sundays between 17:00 and 18:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

2.50

Tuesdays between 16:00 and 17:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

6.00

Wednesdays between 13:00 and 14:00 - 1 time(s) in 4 weeks. Approx:4 flight events.