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

26/09/2022 09:24:59

UK Postcode

STAMFORD-HILL-WEST , LONDON , N16 5UG

Baseline geo-coordinates

51.5673 , -0.08801

Survey type

31 days prior to: 26-Sep-2022 @08:56:15

Assessment band

VERY HIGH

Assessment actual value

21.34

Assessment description

Sound equates to a busy Dual Carriageway or Motorway i.e. very regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a flight path or primary flight corridor and subject to Arrivals and/or Departures. At times there will be multiple flight occurrences within the same hour, typically between 10 to 20.

Band range

Lower: 20.0 --> Upper: 30.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

4,157 / 134.1 / 7.9 ❌ (3,171)

Flights above 26k feet.

649 / 20.9 / 1.2 ✔

Flights between 16k and 26k feet

273 / 8.8 / 0.5 ✔

Flights between 13k and 15k feet

114 / 3.7 / 0.2 ✔

Flights between 7k and 12k feet

311 / 10.0 / 0.6 ✔

Flights between 6k and 7k feet

936 / 30.2 / 1.8 ❌ (149)

Flights between 5k and 6k feet

1,430 / 46.1 / 2.7 ❌ (213)

Flights between 4k and 5k feet

405 / 13.1 / 0.8 ❌ (236)

Flights between 3k and 4k feet

18 / 0.6 / 0.0 ✔

Flights below 3k feet

21 / 0.7 / 0.0 ✔

4 or more flights per hour

292 / 9.4 ❌ (202)

9 or more flights per hour

192 / 6.2 ❌ (76)

Departures between 1.5k and 15k feet

26 / 0.8 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

23 / 0.7

Between 1am and 2am

11 / 0.4

Between 2am and 3am

15 / 0.5

Between 3am and 4am

12 / 0.4

Between 4am and 5am

11 / 0.4

Between 5am and 6am

43 / 1.4

Between 6am and 7am

279 / 9.0

Between 7am and 8am

367 / 11.8

Between 8am and 9pm

3,278 / 105.7 / 7.6

Between 10pm and 11pm

60 / 1.9

Between 11pm and Midnight

50 / 1.6

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

20 ✔

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

49 ❌ (43)

Minimum avg. distance in miles

0.44

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

104.0 / 51.0 / 5.5 ❌ (67)

Flight holding stack identified?

No

Altitude for all flights

11,316 ❌ (17,529)

Altitude of departures between 1.5k and 15k feet

8,741 ✔

Altitude of flights below 20k feet

6,665 ❌ (8,833)

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

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

31.60

Saturdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:17 flight events.

29.80

Saturdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:16 flight events.

22.90

Saturdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:12 flight events.

21.00

Saturdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:12 flight events.

29.25

Sundays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

26.88

Saturdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:15 flight events.

26.75

Mondays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:15 flight events.

25.13

Mondays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:14 flight events.

25.00

Sundays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:14 flight events.