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

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.