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

26/07/2024 12:44:59

UK Postcode

FORTUNE-GREEN-0823 , 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

9.69

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

1,909 / 61.6 / 3.6 ✔

Flights above 26k feet.

664 / 21.4 / 1.3 ✔

Flights between 16k and 26k feet

262 / 8.5 / 0.5 ✔

Flights between 13k and 15k feet

188 / 6.1 / 0.4 ❌ (161)

Flights between 7k and 12k feet

199 / 6.4 / 0.4 ✔

Flights between 6k and 7k feet

127 / 4.1 / 0.2 ✔

Flights between 5k and 6k feet

337 / 10.9 / 0.6 ❌ (265)

Flights between 4k and 5k feet

115 / 3.7 / 0.2 ✔

Flights between 3k and 4k feet

8 / 0.3 / 0.0 ✔

Flights below 3k feet

9 / 0.3 / 0.0 ✔

4 or more flights per hour

104 / 3.4 ✔

9 or more flights per hour

21 / 0.7 ✔

Departures between 1.5k and 15k feet

423 / 13.6 / 0.8 ❌ (420)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

20 / 0.6

1 AM

30 / 1.0

2 AM

26 / 0.8

3 AM

13 / 0.4

4 AM

21 / 0.7

5 AM

31 / 1.0

6 AM

78 / 2.5

7 AM

80 / 2.6

8 AM to 9 PM

1,492 / 48.1 / 3.4

10 PM

57 / 1.8

11 PM

48 / 1.5

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

16 ✔

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

36 ✔

Minimum avg. distance in miles

0.47

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

28.0 / 10.0 / 1.5 ✔

Flight holding stack identified?

No

Altitude for all flights

18,422 ✔

Altitude of departures between 1.5k and 15k feet

5,376 ❌ (7,901)

Altitude of flights below 20k feet

8,646 ✔

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

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

14.63

Thursday @ 10:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.38

Wednesday @ 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.00

Thursday @ 15:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.13

Thursday @ 9:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.50

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

6.75

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

5.88

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

5.38

Thursday @ 13:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.13

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