Assessment ScoreCard – 31 Day

Aircraft Traffic Assessment: 31 Day Scorecard



The symbol indicates the measure is better than the average when compared with other assessed
UK postcodes. The ❌ represents the opposite. Assessed averages are shown in brackets.

See: for a full explanation about the Assessment scorecard.

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.

Our scorecard is designed to provide a greater understanding how the assessment was reached for your selected UK post code. To enable you to validate our assessment we also provide up to 10 occurrences when we believe the disruption will be at its highest.

For those that would like to perform their own analysis we can also provide the low level flight data that includes the length of time a plane existed inside your select airspace bubble.



Evidence by associated Airport – indicative only: GREENWICH

UK Airport Count of Flights Percentage of Total
LONDON HEATHROW AIRPORT466485.2
TRANSATLANTIC FLIGHT?3416.2
BIRMINGHAM INTERNATIONAL AIRPORT1602.9
LONDON GATWICK AIRPORT1092.0