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

16/01/2025 16:48:08

UK Postcode

GREENWICH , LONDON , SE10 9PR

Baseline geo-coordinates

51.4849 , 0.003755

Survey type

31 days prior to: 15-Jan-2025 @22:54:47

Assessment band

VERY HIGH

Assessment actual value

22.52

Assessment description

Highly likely to encounter both night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 20.0 --> Upper: 30.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

5,476 / 176.6 / 10.4 ❌ (3,171)

Flights above 26k feet.

564 / 18.2 / 1.1 ✔

Flights between 16k and 26k feet

163 / 5.3 / 0.3 ✔

Flights between 13k and 15k feet

35 / 1.1 / 0.1 ✔

Flights between 7k and 12k feet

22 / 0.7 / 0.0 ✔

Flights between 6k and 7k feet

200 / 6.5 / 0.4 ❌ (149)

Flights between 5k and 6k feet

1,786 / 57.6 / 3.4 ❌ (213)

Flights between 4k and 5k feet

2,266 / 73.1 / 4.3 ❌ (236)

Flights between 3k and 4k feet

388 / 12.5 / 0.7 ❌ (192)

Flights below 3k feet

52 / 1.7 / 0.1 ✔

4 or more flights per hour

445 / 14.4 ❌ (202)

9 or more flights per hour

264 / 8.5 ❌ (76)

Departures between 1.5k and 15k feet

19 / 0.6 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

6 / 0.2

Between 1am and 2am

2 / 0.1

Between 2am and 3am

5 / 0.2

Between 3am and 4am

11 / 0.4

Between 4am and 5am

67 / 2.2

Between 5am and 6am

141 / 4.5

Between 6am and 7am

295 / 9.5

Between 7am and 8am

311 / 10.0

Between 8am and 9pm

4,443 / 143.3 / 10.2

Between 10pm and 11pm

117 / 3.8

Between 11pm and Midnight

31 / 1.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

30 ✔

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

42 ✔

Minimum avg. distance in miles

0.49

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

155.0 / 65.0 / 8.2 ❌ (67)

Flight holding stack identified?

No

Altitude for all flights

8,426 ❌ (17,529)

Altitude of departures between 1.5k and 15k feet

11,618 ✔

Altitude of flights below 20k feet

5,227 ❌ (8,833)

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

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

25.40

Tuesdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

24.90

Tuesdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

24.70

Mondays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

22.70

Tuesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

22.50

Tuesdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

22.00

Tuesdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:12 flight events.

21.90

Mondays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:12 flight events.

21.60

Tuesdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:12 flight events.