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

28/07/2024 20:34:16

UK Postcode

FORTUNE-GREEN , LONDON , NW6 1DZ

Baseline geo-coordinates

51.5533 , -0.197659

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

REGULAR

Assessment actual value

7.62

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

1,943 / 62.7 / 3.7 ✔

Flights above 26k feet.

762 / 24.6 / 1.4 ❌ (720)

Flights between 16k and 26k feet

308 / 9.9 / 0.6 ✔

Flights between 13k and 15k feet

233 / 7.5 / 0.4 ❌ (167)

Flights between 7k and 12k feet

161 / 5.2 / 0.3 ✔

Flights between 6k and 7k feet

114 / 3.7 / 0.2 ✔

Flights between 5k and 6k feet

271 / 8.7 / 0.5 ❌ (263)

Flights between 4k and 5k feet

64 / 2.1 / 0.1 ✔

Flights between 3k and 4k feet

6 / 0.2 / 0.0 ✔

Flights below 3k feet

24 / 0.8 / 0.0 ✔

4 or more flights per hour

84 / 2.7 ✔

9 or more flights per hour

20 / 0.6 ✔

Departures between 1.5k and 15k feet

321 / 10.4 / 0.6 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

47 / 1.5

1 AM

30 / 1.0

2 AM

28 / 0.9

3 AM

14 / 0.5

4 AM

24 / 0.8

5 AM

30 / 1.0

6 AM

75 / 2.4

7 AM

85 / 2.7

8 AM to 9 PM

1,482 / 47.8 / 3.4

10 PM

64 / 2.1

11 PM

49 / 1.6

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

15 ✔

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

37 ✔

Minimum avg. distance in miles

0.48

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

22.0 / 9.0 / 1.2 ✔

Flight holding stack identified?

No

Altitude for all flights

20,188 ✔

Altitude of departures between 1.5k and 15k feet

5,627 ❌ (7,941)

Altitude of flights below 20k feet

9,400 ✔

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

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

8.00

Monday @ 13:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

18.50

Monday @ 14:00 - 3 time(s) in 4 weeks. Approx:10 flight events.

18.33

Monday @ 15:00 - 3 time(s) in 4 weeks. Approx:10 flight events.

12.50

Monday @ 19:00 - 3 time(s) in 4 weeks. Approx:7 flight events.

10.83

Monday @ 18:00 - 3 time(s) in 4 weeks. Approx:6 flight events.

5.83

Tuesday @ 11:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.83

Saturday @ 15:00 - 3 time(s) in 4 weeks. Approx:3 flight events.