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

24/12/2021 14:30:07

UK Postcode

DULWICH-VILLAGE , LONDON , SE22 8TQ

Baseline geo-coordinates

51.456 , -0.083769

Survey type

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

Assessment band

VERY HIGH

Assessment actual value

22.80

Assessment description

Sound equates to a busy Dual Carriageway or Motorway i.e. very regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a flight path or primary flight corridor and subject to Arrivals and/or Departures. At times there will be multiple flight occurrences within the same hour, typically between 10 to 20.

Band range

Lower: 20.0 --> Upper: 30.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

5,089 / 164.2 / 9.7 ❌ (1,863)

Flights above 26k feet.

323 / 10.4 / 0.6 ✔

Flights between 16k and 26k feet

141 / 4.5 / 0.3 ✔

Flights between 13k and 15k feet

56 / 1.8 / 0.1 ✔

Flights between 7k and 12k feet

13 / 0.4 / 0.0 ✔

Flights between 6k and 7k feet

12 / 0.4 / 0.0 ✔

Flights between 5k and 6k feet

294 / 9.5 / 0.6 ❌ (209)

Flights between 4k and 5k feet

3,062 / 98.8 / 5.8 ❌ (205)

Flights between 3k and 4k feet

923 / 29.8 / 1.8 ❌ (170)

Flights below 3k feet

265 / 8.5 / 0.5 ✔

4 or more flights per hour

366 / 11.8 ❌ (127)

9 or more flights per hour

199 / 6.4 ❌ (49)

Departures between 1.5k and 15k feet

23 / 0.7 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

2 / 0.1

1 AM

7 / 0.2

2 AM

2 / 0.1

3 AM

6 / 0.2

4 AM

42 / 1.4

5 AM

80 / 2.6

6 AM

421 / 13.6

7 AM

460 / 14.8

8 AM to 9 PM

3,919 / 126.4 / 9.0

10 PM

98 / 3.2

11 PM

8 / 0.3

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

40 ✔

Minimum avg. distance in miles

0.57

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

151.0 / 61.0 / 7.9 ❌ (42)

Flight holding stack identified?

No

Altitude for all flights

6,759 ❌ (16,104)

Altitude of departures between 1.5k and 15k feet

12,908 ✔

Altitude of flights below 20k feet

4,686 ❌ (7,553)

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

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

29.60

Wednesday @ 8:00 - 4 time(s) in 4 weeks. Approx:17 flight events.

28.80

Thursday @ 7:00 - 4 time(s) in 4 weeks. Approx:17 flight events.

28.10

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

27.50

Thursday @ 18:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

26.70

Wednesday @ 7:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

26.30

Wednesday @ 18:00 - 4 time(s) in 4 weeks. Approx:15 flight events.

24.60

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

22.70

Wednesday @ 9:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

22.60

Thursday @ 9:00 - 4 time(s) in 4 weeks. Approx:12 flight events.