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

12/11/2022 13:02:57

UK Postcode

GREENWICH-PENINSULA , LONDON , SE10 0XP

Baseline geo-coordinates

51.4933 , 0.018031

Survey type

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

Assessment band

VERY HIGH

Assessment actual value

25.54

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

5,536 / 178.6 / 10.5 ❌ (3,269)

Flights above 26k feet.

524 / 16.9 / 1.0 ✔

Flights between 16k and 26k feet

154 / 5.0 / 0.3 ✔

Flights between 13k and 15k feet

57 / 1.8 / 0.1 ✔

Flights between 7k and 12k feet

17 / 0.5 / 0.0 ✔

Flights between 6k and 7k feet

257 / 8.3 / 0.5 ❌ (189)

Flights between 5k and 6k feet

1,458 / 47.0 / 2.8 ❌ (305)

Flights between 4k and 5k feet

784 / 25.3 / 1.5 ❌ (264)

Flights between 3k and 4k feet

38 / 1.2 / 0.1 ✔

Flights below 3k feet

2,247 / 72.5 / 4.3 ❌ (793)

4 or more flights per hour

385 / 12.4 ❌ (208)

9 or more flights per hour

245 / 7.9 ❌ (90)

Departures between 1.5k and 15k feet

1,604 / 51.7 / 3.0 ❌ (428)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

15 / 0.5

1 AM

17 / 0.5

2 AM

15 / 0.5

3 AM

21 / 0.7

4 AM

29 / 0.9

5 AM

83 / 2.7

6 AM

235 / 7.6

7 AM

392 / 12.6

8 AM to 9 PM

4,014 / 129.5 / 9.2

10 PM

63 / 2.0

11 PM

26 / 0.8

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

38 ✔

Minimum avg. distance in miles

0.65

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

158.0 / 61.0 / 8.3 ❌ (77)

Flight holding stack identified?

No

Altitude for all flights

7,841 ❌ (15,935)

Altitude of departures between 1.5k and 15k feet

2,059 ❌ (7,594)

Altitude of flights below 20k feet

4,430 ❌ (7,901)

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

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

33.50

Friday @ 19:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

31.20

Thursday @ 19:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

30.90

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

28.80

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

26.70

Friday @ 18:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

24.80

Thursday @ 18:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

24.50

Thursday @ 15:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

24.40

Thursday @ 17:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

23.80

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