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

13/02/2025 20:09:22

UK Postcode

CRANLEIGH , SURREY , GU6 7BJ

Baseline geo-coordinates

51.1399 , -0.478584

Survey type

31 days prior to: 01-Sep-2024 @00:11:29

Assessment band

INTERMITTENT

Assessment actual value

5.69

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,889 / 60.9 / 3.6 ✔

Flights above 26k feet.

638 / 20.6 / 1.2 ✔

Flights between 16k and 26k feet

266 / 8.6 / 0.5 ✔

Flights between 13k and 15k feet

336 / 10.8 / 0.6 ❌ (179)

Flights between 7k and 12k feet

541 / 17.5 / 1.0 ✔

Flights between 6k and 7k feet

39 / 1.3 / 0.1 ✔

Flights between 5k and 6k feet

28 / 0.9 / 0.1 ✔

Flights between 4k and 5k feet

4 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

36 / 1.2 / 0.1 ✔

4 or more flights per hour

91 / 2.9 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

596 / 19.2 / 1.1 ❌ (399)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

26 / 0.8

Between 1am and 2am

27 / 0.9

Between 2am and 3am

6 / 0.2

Between 3am and 4am

6 / 0.2

Between 4am and 5am

3 / 0.1

Between 5am and 6am

14 / 0.5

Between 6am and 7am

93 / 3.0

Between 7am and 8am

147 / 4.7

Between 8am and 9pm

1,384 / 44.6 / 3.2

Between 10pm and 11pm

92 / 3.0

Between 11pm and Midnight

65 / 2.1

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

18 ✔

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

53 ❌ (43)

Minimum avg. distance in miles

0.47

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

23.0 / 12.0 / 1.2 ✔

Flight holding stack identified?

No

Altitude for all flights

20,252 ✔

Altitude of departures between 1.5k and 15k feet

11,212 ✔

Altitude of flights below 20k feet

12,321 ✔

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

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

3.80

Fridays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

6.00

Mondays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

5.00

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

4.50

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

3.75

Mondays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:3 flight events.

3.13

Fridays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.83

Thursdays between 17:00 and 18:00 - 3 time(s) in 4 weeks. Approx:5 flight events.

7.33

Tuesdays between 20:00 and 21:00 - 3 time(s) in 4 weeks. Approx:5 flight events.

7.00

Sundays between 8:00 and 9:00- 3 time(s) in 4 weeks. Approx:5 flight events.