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

09/02/2025 08:08:02

UK Postcode

GREENHITHE , KENT , DA9 9ST

Baseline geo-coordinates

51.4413 , 0.275291

Survey type

31 days prior to: 01-Sep-2024 @00:47:20

Assessment band

REGULAR

Assessment actual value

9.93

Assessment description

Will encounter some 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: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,356 / 76.0 / 4.5

Flights above 26k feet.

835 / 26.9 / 1.6 (756)

Flights between 16k and 26k feet

186 / 6.0 / 0.4

Flights between 13k and 15k feet

121 / 3.9 / 0.2

Flights between 7k and 12k feet

69 / 2.2 / 0.1

Flights between 6k and 7k feet

3 / 0.1 / 0.0

Flights between 5k and 6k feet

0

Flights between 4k and 5k feet

5 / 0.2 / 0.0

Flights between 3k and 4k feet

464 / 15.0 / 0.9 (188)

Flights below 3k feet

673 / 21.7 / 1.3 (576)

4 or more flights per hour

164 / 5.3

9 or more flights per hour

23 / 0.7

Departures between 1.5k and 15k feet

140 / 4.5 / 0.3

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

26 / 0.8

Between 1am and 2am

11 / 0.4

Between 2am and 3am

12 / 0.4

Between 3am and 4am

16 / 0.5

Between 4am and 5am

31 / 1.0

Between 5am and 6am

49 / 1.6

Between 6am and 7am

77 / 2.5

Between 7am and 8am

134 / 4.3

Between 8am and 9pm

1,873 / 60.4 / 4.3

Between 10pm and 11pm

31 / 1.0

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

28

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

36

Minimum avg. distance in miles

0.51

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

43.0 / 16.0 / 2.3

Flight holding stack identified?

No

Altitude for all flights

16,606 (17,511)

Altitude of departures between 1.5k and 15k feet

11,535

Altitude of flights below 20k feet

5,619 (8,786)

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

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

8.70

Wednesdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.60

Saturdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.30

Wednesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.90

Fridays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

6.30

Saturdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.60

Thursdays between 20:00 and 21:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

5.50

Fridays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.00

Saturdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:3 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: GREENHITHE

UK Airport Count of Flights Percentage of Total
TRANSATLANTIC FLIGHT?50021.2
LONDON CITY AIRPORT42117.9
LONDON BIGGIN HILL AIRPORT37115.7
LONDON GATWICK AIRPORT25310.7
MANCHESTER AIRPORT1988.4
MINOR UK AIRPORT?1345.7
EAST MIDLANDS AIRPORT652.8
BIRMINGHAM INTERNATIONAL AIRPORT602.5
LONDON HEATHROW AIRPORT582.5
FARNBOROUGH AIRPORT482.0
LONDON LUTON AIRPORT472.0
BOURNEMOUTH AIRPORT451.9
SOUTHEND AIRPORT451.9
SOUTHAMPTON AIRPORT291.2