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

07/01/2024 17:32:56

UK Postcode

COOKHAM-WALTHAM , BERKSHIRE , SL6 9AS

Baseline geo-coordinates

51.5618 , -0.742486

Survey type

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

Assessment band

REGULAR

Assessment actual value

7.34

Assessment description

Sound equates to a "B" road or busy "C" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a secondary 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 4. Some of the flights will be below 7000 feet.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

305 / 9.8 / 0.6 ✔

Flights above 26k feet.

98 / 3.2 / 0.2 ✔

Flights between 16k and 26k feet

73 / 2.4 / 0.1 ✔

Flights between 13k and 15k feet

1 / 0.0 / 0.0 ✔

Flights between 7k and 12k feet

33 / 1.1 / 0.1 ✔

Flights between 6k and 7k feet

31 / 1.0 / 0.1 ✔

Flights between 5k and 6k feet

33 / 1.1 / 0.1 ✔

Flights between 4k and 5k feet

17 / 0.5 / 0.0 ✔

Flights between 3k and 4k feet

8 / 0.3 / 0.0 ✔

Flights below 3k feet

11 / 0.4 / 0.0 ✔

4 or more flights per hour

20 / 0.6 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

23 / 0.7 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

1 / 0.0

2 AM

1 / 0.0

3 AM

4 AM

1 / 0.0

5 AM

8 / 0.3

6 AM

12 / 0.4

7 AM

17 / 0.5

8 AM to 9 PM

240 / 7.7 / 0.6

10 PM

12 / 0.4

11 PM

2 / 0.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

76 ❌ (43)

Minimum avg. distance in miles

0.46

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

17.0 / 13.0 / 0.9 ✔

Flight holding stack identified?

No

Altitude for all flights

18,896 ✔

Altitude of departures between 1.5k and 15k feet

9,642 ✔

Altitude of flights below 20k feet

7,098 ❌ (7,846)

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

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

17.50

Saturday @ 19:00 - 1 time(s) in 4 weeks. Approx:9 flight events.

16.00

Thursday @ 21:00 - 1 time(s) in 4 weeks. Approx:8 flight events.

11.00

Sunday @ 11:00 - 1 time(s) in 4 weeks. Approx:6 flight events.

9.50

Thursday @ 16:00 - 1 time(s) in 4 weeks. Approx:5 flight events.