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

07/10/2024 09:56:17

UK Postcode

WALTON-ON-THAMES-2M-0824 , SURREY , KT12 1AB

Baseline geo-coordinates

51.3868 , -0.420133

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

EXTREMELY HIGH

Assessment actual value

32.69

Assessment description

Highly 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: 30.0 --> Upper: 1000.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

12,951 / 417.8 / 24.6 ❌ (3,428)

Flights above 26k feet.

1,980 / 63.9 / 3.8 ❌ (724)

Flights between 16k and 26k feet

2,785 / 89.8 / 5.3 ❌ (325)

Flights between 13k and 15k feet

196 / 6.3 / 0.4 ❌ (161)

Flights between 7k and 12k feet

2,706 / 87.3 / 5.1 ❌ (500)

Flights between 6k and 7k feet

396 / 12.8 / 0.8 ❌ (169)

Flights between 5k and 6k feet

2,688 / 86.7 / 5.1 ❌ (265)

Flights between 4k and 5k feet

1,547 / 49.9 / 2.9 ❌ (320)

Flights between 3k and 4k feet

459 / 14.8 / 0.9 ❌ (271)

Flights below 3k feet

194 / 6.3 / 0.4 ✔

4 or more flights per hour

611 / 19.7 ❌ (218)

9 or more flights per hour

542 / 17.5 ❌ (91)

Departures between 1.5k and 15k feet

5,100 / 164.5 / 9.7 ❌ (420)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

128 / 4.1

1 AM

96 / 3.1

2 AM

42 / 1.4

3 AM

38 / 1.2

4 AM

60 / 1.9

5 AM

157 / 5.1

6 AM

490 / 15.8

7 AM

669 / 21.6

8 AM to 9 PM

10,226 / 329.9 / 23.6

10 PM

605 / 19.5

11 PM

335 / 10.8

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

28 ❌ (23)

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

51 ❌ (43)

Minimum avg. distance in miles

1.37

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

346.0 / 174.0 / 18.2 ❌ (78)

Flight holding stack identified?

Yes ❌

Altitude for all flights

13,293 ❌ (16,286)

Altitude of departures between 1.5k and 15k feet

5,043 ❌ (7,901)

Altitude of flights below 20k feet

9,227 ✔

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

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

41.50

Thursday @ 19:00 - 4 time(s) in 4 weeks. Approx:26 flight events.

41.20

Thursday @ 10:00 - 4 time(s) in 4 weeks. Approx:26 flight events.

39.60

Thursday @ 9:00 - 4 time(s) in 4 weeks. Approx:24 flight events.

39.30

Friday @ 13:00 - 4 time(s) in 4 weeks. Approx:23 flight events.

39.20

Saturday @ 10:00 - 4 time(s) in 4 weeks. Approx:24 flight events.

39.00

Thursday @ 12:00 - 4 time(s) in 4 weeks. Approx:24 flight events.

38.70

Friday @ 9:00 - 4 time(s) in 4 weeks. Approx:23 flight events.

38.40

Saturday @ 12:00 - 4 time(s) in 4 weeks. Approx:23 flight events.