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

16/08/2022 09:32:19

UK Postcode

ALEXANDRA-PARK , LONDON , N22 7AF

Baseline geo-coordinates

51.6005 , -0.128402

Survey type

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

Assessment band

FREQUENT

Assessment actual value

12.27

Assessment description

Sound equates to an "A" road or a busy "B" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-10. Some of the flights will be below 7000 feet.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,839 / 91.6 / 5.4 ✔

Flights above 26k feet.

751 / 24.2 / 1.4 ❌ (634)

Flights between 16k and 26k feet

252 / 8.1 / 0.5 ✔

Flights between 13k and 15k feet

181 / 5.8 / 0.3 ❌ (135)

Flights between 7k and 12k feet

378 / 12.2 / 0.7 ✔

Flights between 6k and 7k feet

665 / 21.5 / 1.3 ❌ (182)

Flights between 5k and 6k feet

481 / 15.5 / 0.9 ❌ (280)

Flights between 4k and 5k feet

71 / 2.3 / 0.1 ✔

Flights between 3k and 4k feet

15 / 0.5 / 0.0 ✔

Flights below 3k feet

45 / 1.5 / 0.1 ✔

4 or more flights per hour

234 / 7.5 ❌ (203)

9 or more flights per hour

56 / 1.8 ✔

Departures between 1.5k and 15k feet

101 / 3.3 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

25 / 0.8

1 AM

24 / 0.8

2 AM

22 / 0.7

3 AM

13 / 0.4

4 AM

7 / 0.2

5 AM

28 / 0.9

6 AM

163 / 5.3

7 AM

165 / 5.3

8 AM to 9 PM

2,278 / 73.5 / 5.2

10 PM

45 / 1.5

11 PM

55 / 1.8

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

48 ❌ (43)

Minimum avg. distance in miles

0.47

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

57.0 / 28.0 / 3.0 ✔

Flight holding stack identified?

No

Altitude for all flights

15,427 ❌ (16,202)

Altitude of departures between 1.5k and 15k feet

7,342 ❌ (7,809)

Altitude of flights below 20k feet

7,733 ❌ (8,007)

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

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

15.20

Tuesday @ 8:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

14.70

Monday @ 9:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

9.50

Sunday @ 11:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.80

Sunday @ 10:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.70

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.90

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

4.40

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

18.75

Sunday @ 6:00 - 4 time(s) in 4 weeks. Approx:10 flight events.