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 Day. Based on the 31 days prior to the survey date shown above.

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 ❌ (1,863)

Flights above 26k feet.

649 / 20.9 / 1.2 ❌ (382)

Flights between 16k and 26k feet

273 / 8.8 / 0.5 ❌ (175)

Flights between 13k and 15k feet

114 / 3.7 / 0.2 ❌ (80)

Flights between 7k and 12k feet

311 / 10.0 / 0.6 ❌ (227)

Flights between 6k and 7k feet

936 / 30.2 / 1.8 ❌ (131)

Flights between 5k and 6k feet

1,430 / 46.1 / 2.7 ❌ (209)

Flights between 4k and 5k feet

405 / 13.1 / 0.8 ❌ (205)

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 ❌ (127)

9 or more flights per hour

192 / 6.2 ❌ (49)

Departures between 1.5k and 15k feet

26 / 0.8 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

23 / 0.7

1 AM

11 / 0.4

2 AM

15 / 0.5

3 AM

12 / 0.4

4 AM

11 / 0.4

5 AM

43 / 1.4

6 AM

279 / 9.0

7 AM

367 / 11.8

8 AM to 9 PM

3,278 / 105.7 / 7.6

10 PM

60 / 1.9

11 PM

50 / 1.6

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

20 ✔

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

49 ❌ (41)

Minimum avg. distance in miles

0.44

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

104.0 / 51.0 / 5.5 ❌ (42)

Flight holding stack identified?

No

Altitude for all flights

11,316 ❌ (16,104)

Altitude of departures between 1.5k and 15k feet

8,741 ✔

Altitude of flights below 20k feet

6,665 ❌ (7,553)

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

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

31.60

Saturday @ 8:00 - 4 time(s) in 4 weeks. Approx:17 flight events.

29.80

Saturday @ 7:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

22.90

Saturday @ 6:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

21.00

Saturday @ 9:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

29.25

Sunday @ 13:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

26.88

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

26.75

Monday @ 8:00 - 4 time(s) in 4 weeks. Approx:15 flight events.

25.13

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

25.00

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:14 flight events.