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

15/03/2024 21:50:32

UK Postcode

GREENWICH-PARK , LONDON , SE10 8ER

Baseline geo-coordinates

51.4787 , -0.007713

Survey type

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

Assessment band

VERY HIGH

Assessment actual value

20.94

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

5,732 / 184.9 / 10.9 ❌ (3,233)

Flights above 26k feet.

703 / 22.7 / 1.3 ❌ (618)

Flights between 16k and 26k feet

194 / 6.3 / 0.4 ✔

Flights between 13k and 15k feet

65 / 2.1 / 0.1 ✔

Flights between 7k and 12k feet

29 / 0.9 / 0.1 ✔

Flights between 6k and 7k feet

92 / 3.0 / 0.2 ✔

Flights between 5k and 6k feet

1,777 / 57.3 / 3.4 ❌ (301)

Flights between 4k and 5k feet

2,550 / 82.3 / 4.8 ❌ (339)

Flights between 3k and 4k feet

261 / 8.4 / 0.5 ✔

Flights below 3k feet

61 / 2.0 / 0.1 ✔

4 or more flights per hour

450 / 14.5 ❌ (209)

9 or more flights per hour

269 / 8.7 ❌ (88)

Departures between 1.5k and 15k feet

38 / 1.2 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

18 / 0.6

1 AM

17 / 0.5

2 AM

11 / 0.4

3 AM

14 / 0.5

4 AM

71 / 2.3

5 AM

215 / 6.9

6 AM

395 / 12.7

7 AM

391 / 12.6

8 AM to 9 PM

4,285 / 138.2 / 9.9

10 PM

193 / 6.2

11 PM

88 / 2.8

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

24 ❌ (21)

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

53 ❌ (43)

Minimum avg. distance in miles

0.48

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

158.0 / 83.0 / 8.3 ❌ (77)

Flight holding stack identified?

No

Altitude for all flights

9,000 ❌ (15,762)

Altitude of departures between 1.5k and 15k feet

11,756 ✔

Altitude of flights below 20k feet

5,290 ❌ (7,846)

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

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

33.38

Wednesday @ 10:00 - 4 time(s) in 4 weeks. Approx:19 flight events.

33.13

Tuesday @ 20:00 - 4 time(s) in 4 weeks. Approx:19 flight events.

30.75

Sunday @ 6:00 - 4 time(s) in 4 weeks. Approx:17 flight events.

30.13

Tuesday @ 6:00 - 4 time(s) in 4 weeks. Approx:17 flight events.

28.38

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

27.88

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

27.38

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