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

22/08/2021 07:36:38

UK Postcode

BROOKLANDS-WEYBRIDGE , SURREY , KT13 0SL

Baseline geo-coordinates

51.3531 , -0.470696

Survey type

31 Day. Based on the 31 days prior to the survey date shown above.

Assessment band

OCCASIONAL

Assessment actual value

6.15

Assessment description

Sound equates to a "C" road or an active country lane i.e. irregular traffic volumes. Location is on a flight route as opposed to a flight corridor. Some of the flights will be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

967 / 31.2 / 1.8 ✔

Flights above 26k feet.

457 / 14.7 / 0.9 ❌ (382)

Flights between 16k and 26k feet

127 / 4.1 / 0.2 ✔

Flights between 13k and 15k feet

21 / 0.7 / 0.0 ✔

Flights between 7k and 12k feet

273 / 8.8 / 0.5 ❌ (227)

Flights between 6k and 7k feet

41 / 1.3 / 0.1 ✔

Flights between 5k and 6k feet

20 / 0.6 / 0.0 ✔

Flights between 4k and 5k feet

8 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

19 / 0.6 / 0.0 ✔

4 or more flights per hour

37 / 1.2 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

63 / 2.0 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

4 / 0.1

1 AM

2 AM

3 / 0.1

3 AM

2 / 0.1

4 AM

3 / 0.1

5 AM

17 / 0.5

6 AM

43 / 1.4

7 AM

63 / 2.0

8 AM to 9 PM

768 / 24.8 / 1.8

10 PM

19 / 0.6

11 PM

17 / 0.5

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

16 ✔

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

45 ❌ (41)

Minimum avg. distance in miles

0.46

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

10.0 / 5.0 / 0.5 ✔

Flight holding stack identified?

No

Altitude for all flights

22,148 ✔

Altitude of departures between 1.5k and 15k feet

6,501 ❌ (7,653)

Altitude of flights below 20k feet

9,613 ✔

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

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

5.17

Saturday @ 14:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

4.83

Saturday @ 15:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.00

Sunday @ 7:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.33

Monday @ 10:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

9.50

Friday @ 15:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

8.00

Saturday @ 10:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

7.00

Wednesday @ 15:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

6.50

Saturday @ 13:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

6.00

Sunday @ 14:00 - 2 time(s) in 4 weeks. Approx:4 flight events.