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

31/01/2021 15:29:49

UK Postcode

PUTNEY-EMBANKMENT , LONDON , SW15 1DY

Baseline geo-coordinates

51.4677 , -0.224734

Survey type

31 Day. Based on the 31 days prior to the survey date shown above.

Assessment band

HIGH

Assessment actual value

19.20

Assessment description

Sound equates to a busy "A" road or Dual Carriageway i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or busy flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-15. Some of the flights will be below 7000 feet.

Band range

Lower: 16.0 --> Upper: 20.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

3,541 / 114.2 / 6.7 ❌ (1,509)

Flights above 26k feet.

110 / 3.5 / 0.2 ✔

Flights between 16k and 26k feet

36 / 1.2 / 0.1 ✔

Flights between 13k and 15k feet

8 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

23 / 0.7 / 0.0 ✔

Flights between 6k and 7k feet

1 / 0.0 / 0.0 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

9 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

813 / 26.2 / 1.5 ❌ (127)

Flights below 3k feet

2,537 / 81.8 / 4.8 ❌ (247)

4 or more flights per hour

321 / 10.4 ❌ (102)

9 or more flights per hour

197 / 6.4 ❌ (32)

Departures between 1.5k and 15k feet

4 / 0.1 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

7 / 0.2

1 AM

2 / 0.1

2 AM

1 / 0.0

3 AM

1 / 0.0

4 AM

34 / 1.1

5 AM

72 / 2.3

6 AM

319 / 10.3

7 AM

196 / 6.3

8 AM to 9 PM

2,864 / 92.4 / 6.6

10 PM

19 / 0.6

11 PM

12 / 0.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

32 ❌ (21)

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

46 ❌ (41)

Minimum avg. distance in miles

0.69

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

109.0 / 50.0 / 5.7 ❌ (32)

Flight holding stack identified?

No

Altitude for all flights

4,067 ❌ (16,671)

Altitude of departures between 1.5k and 15k feet

5,383 ❌ (7,778)

Altitude of flights below 20k feet

2,958 ❌ (7,795)

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

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

29.13

Thursday @ 6:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

25.50

Saturday @ 13:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

24.63

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

24.38

Saturday @ 14:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

22.75

Friday @ 6:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

22.13

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

20.38

Saturday @ 15:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

19.25

Friday @ 9:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

17.25

Saturday @ 16:00 - 4 time(s) in 4 weeks. Approx:10 flight events.