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

17/06/2022 13:33:39

UK Postcode

GILLESPIE-ROAD , LONDON , N4 2QY

Baseline geo-coordinates

51.5615 , -0.102276

Survey type

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

Assessment band

FREQUENT

Assessment actual value

15.04

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

3,778 / 121.9 / 7.2 ❌ (3,399)

Flights above 26k feet.

717 / 23.1 / 1.4 ✔

Flights between 16k and 26k feet

302 / 9.7 / 0.6 ✔

Flights between 13k and 15k feet

117 / 3.8 / 0.2 ✔

Flights between 7k and 12k feet

204 / 6.6 / 0.4 ✔

Flights between 6k and 7k feet

782 / 25.2 / 1.5 ❌ (166)

Flights between 5k and 6k feet

1,143 / 36.9 / 2.2 ❌ (263)

Flights between 4k and 5k feet

458 / 14.8 / 0.9 ❌ (319)

Flights between 3k and 4k feet

23 / 0.7 / 0.0 ✔

Flights below 3k feet

32 / 1.0 / 0.1 ✔

4 or more flights per hour

337 / 10.9 ❌ (217)

9 or more flights per hour

128 / 4.1 ❌ (90)

Departures between 1.5k and 15k feet

15 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

20 / 0.6

1 AM

15 / 0.5

2 AM

16 / 0.5

3 AM

14 / 0.5

4 AM

14 / 0.5

5 AM

53 / 1.7

6 AM

206 / 6.6

7 AM

264 / 8.5

8 AM to 9 PM

3,033 / 97.8 / 7.0

10 PM

84 / 2.7

11 PM

49 / 1.6

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

19 ✔

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

40 ✔

Minimum avg. distance in miles

0.47

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

90.0 / 36.0 / 4.7 ❌ (77)

Flight holding stack identified?

No

Altitude for all flights

12,413 ❌ (16,269)

Altitude of departures between 1.5k and 15k feet

10,002 ✔

Altitude of flights below 20k feet

6,725 ❌ (8,043)

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

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

15.80

Wednesday @ 13:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

14.50

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

14.40

Wednesday @ 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

13.80

Wednesday @ 7:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

12.30

Wednesday @ 8:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

12.00

Wednesday @ 11:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.00

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

10.30

Wednesday @ 16:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.80

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