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

22/03/2024 09:42:10

UK Postcode

WINDLESHAM , SURREY , GU24 8AP

Baseline geo-coordinates

51.3379 , -0.580521

Survey type

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

Assessment band

FREQUENT

Assessment actual value

13.02

Assessment description

Sound equates to an "A" road or a busy "B" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-10. Some of the flights will be below 7000 feet.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

4,673 / 150.7 / 8.9 ❌ (3,135)

Flights above 26k feet.

1,310 / 42.3 / 2.5 ❌ (634)

Flights between 16k and 26k feet

235 / 7.6 / 0.4 ✔

Flights between 13k and 15k feet

15 / 0.5 / 0.0 ✔

Flights between 7k and 12k feet

1,162 / 37.5 / 2.2 ❌ (431)

Flights between 6k and 7k feet

355 / 11.5 / 0.7 ❌ (182)

Flights between 5k and 6k feet

149 / 4.8 / 0.3 ✔

Flights between 4k and 5k feet

29 / 0.9 / 0.1 ✔

Flights between 3k and 4k feet

36 / 1.2 / 0.1 ✔

Flights below 3k feet

1,382 / 44.6 / 2.6 ❌ (650)

4 or more flights per hour

342 / 11.0 ❌ (203)

9 or more flights per hour

80 / 2.6 ✔

Departures between 1.5k and 15k feet

1,124 / 36.3 / 2.1 ❌ (380)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

21 / 0.7

1 AM

6 / 0.2

2 AM

2 / 0.1

3 AM

5 / 0.2

4 AM

10 / 0.3

5 AM

17 / 0.5

6 AM

125 / 4.0

7 AM

187 / 6.0

8 AM to 9 PM

3,416 / 110.2 / 7.9

10 PM

144 / 4.6

11 PM

102 / 3.3

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

27 ❌ (22)

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

41 ✔

Minimum avg. distance in miles

0.43

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

101.0 / 40.0 / 5.3 ❌ (72)

Flight holding stack identified?

No

Altitude for all flights

15,918 ❌ (16,202)

Altitude of departures between 1.5k and 15k feet

7,456 ❌ (7,809)

Altitude of flights below 20k feet

6,193 ❌ (8,007)

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

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

18.20

Thursday @ 10:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

15.60

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

15.50

Thursday @ 11:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

15.40

Wednesday @ 14:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

15.30

Wednesday @ 15:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

14.90

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

14.80

Thursday @ 8:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

14.50

Thursday @ 14:00 - 4 time(s) in 4 weeks. Approx:9 flight events.