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

22/05/2024 12:40:48

UK Postcode

LIGHTWATER , SURREY , GU18 5QT

Baseline geo-coordinates

51.3469 , -0.672469

Survey type

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

Assessment band

HIGH

Assessment actual value

17.23

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: 16.0 --> Upper: 20.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

5,155 / 166.3 / 9.8 ❌ (3,399)

Flights above 26k feet.

1,583 / 51.1 / 3.0 ❌ (720)

Flights between 16k and 26k feet

305 / 9.8 / 0.6 ✔

Flights between 13k and 15k feet

54 / 1.7 / 0.1 ✔

Flights between 7k and 12k feet

1,863 / 60.1 / 3.5 ❌ (490)

Flights between 6k and 7k feet

1,076 / 34.7 / 2.0 ❌ (166)

Flights between 5k and 6k feet

242 / 7.8 / 0.5 ✔

Flights between 4k and 5k feet

9 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

22 / 0.7 / 0.0 ✔

4 or more flights per hour

362 / 11.7 ❌ (217)

9 or more flights per hour

195 / 6.3 ❌ (90)

Departures between 1.5k and 15k feet

466 / 15.0 / 0.9 ❌ (413)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

14 / 0.5

1 AM

13 / 0.4

2 AM

3 / 0.1

3 AM

4 / 0.1

4 AM

23 / 0.7

5 AM

62 / 2.0

6 AM

295 / 9.5

7 AM

319 / 10.3

8 AM to 9 PM

4,170 / 134.5 / 9.6

10 PM

156 / 5.0

11 PM

52 / 1.7

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

18 ✔

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

53 ❌ (43)

Minimum avg. distance in miles

0.44

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

105.0 / 55.0 / 5.5 ❌ (77)

Flight holding stack identified?

Yes ❌

Altitude for all flights

16,397 ✔

Altitude of departures between 1.5k and 15k feet

7,293 ❌ (7,941)

Altitude of flights below 20k feet

7,544 ❌ (8,043)

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

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

19.80

Sunday @ 12:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

18.90

Sunday @ 11:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

18.20

Sunday @ 13:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

17.60

Sunday @ 9:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

17.10

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

16.10

Sunday @ 17:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

14.90

Sunday @ 14:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

14.10

Sunday @ 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

12.60

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:7 flight events.