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 17:59:57

UK Postcode

WIMBLEDON-COMMON-5HP , LONDON , SW19 5HP

Baseline geo-coordinates

51.4338 , -0.217562

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.07

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

183 / 5.9 / 0.3 ✔

Flights above 26k feet.

24 / 0.8 / 0.0 ✔

Flights between 16k and 26k feet

12 / 0.4 / 0.0 ✔

Flights between 13k and 15k feet

2 / 0.1 / 0.0 ✔

Flights between 7k and 12k feet

15 / 0.5 / 0.0 ✔

Flights between 6k and 7k feet

14 / 0.5 / 0.0 ✔

Flights between 5k and 6k feet

59 / 1.9 / 0.1 ✔

Flights between 4k and 5k feet

49 / 1.6 / 0.1 ✔

Flights between 3k and 4k feet

7 / 0.2 / 0.0 ✔

Flights below 3k feet

1 / 0.0 / 0.0 ✔

4 or more flights per hour

18 / 0.6 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

135 / 4.4 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

2 / 0.1

2 AM

3 AM

4 AM

2 / 0.1

5 AM

6 AM

3 / 0.1

7 AM

7 / 0.2

8 AM to 9 PM

145 / 4.7 / 0.3

10 PM

11 / 0.4

11 PM

8 / 0.3

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

80 ❌ (43)

Minimum avg. distance in miles

0.60

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

20.0 / 16.0 / 1.1 ✔

Flight holding stack identified?

No

Altitude for all flights

10,454 ❌ (15,762)

Altitude of departures between 1.5k and 15k feet

5,355 ❌ (7,703)

Altitude of flights below 20k feet

6,435 ❌ (7,846)

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

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

22.50

Saturday @ 21:00 - 1 time(s) in 4 weeks. Approx:10 flight events.

19.00

Thursday @ 21:00 - 1 time(s) in 4 weeks. Approx:9 flight events.

16.50

Sunday @ 11:00 - 1 time(s) in 4 weeks. Approx:8 flight events.

15.50

Sunday @ 15:00 - 1 time(s) in 4 weeks. Approx:7 flight events.

15.00

Sunday @ 9:00 - 1 time(s) in 4 weeks. Approx:7 flight events.

14.00

Thursday @ 18:00 - 1 time(s) in 4 weeks. Approx:8 flight events.