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

21/07/2022 14:49:19

UK Postcode

ALEXANDRA-PARK-EAST , LONDON , N10 2QG

Baseline geo-coordinates

51.5972 , -0.135742

Survey type

31 days prior to: 11-Jul-2022 @00:13:13

Assessment band

FREQUENT

Assessment actual value

15.94

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

4,482 / 144.6 / 8.5 ❌ (3,220)

Flights above 26k feet.

855 / 27.6 / 1.6 ❌ (755)

Flights between 16k and 26k feet

273 / 8.8 / 0.5 ✔

Flights between 13k and 15k feet

191 / 6.2 / 0.4 ❌ (179)

Flights between 7k and 12k feet

678 / 21.9 / 1.3 ❌ (547)

Flights between 6k and 7k feet

1,352 / 43.6 / 2.6 ❌ (155)

Flights between 5k and 6k feet

926 / 29.9 / 1.8 ❌ (227)

Flights between 4k and 5k feet

136 / 4.4 / 0.3 ✔

Flights between 3k and 4k feet

12 / 0.4 / 0.0 ✔

Flights below 3k feet

59 / 1.9 / 0.1 ✔

4 or more flights per hour

378 / 12.2 ❌ (206)

9 or more flights per hour

172 / 5.5 ❌ (78)

Departures between 1.5k and 15k feet

45 / 1.5 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

24 / 0.8

Between 1am and 2am

20 / 0.6

Between 2am and 3am

15 / 0.5

Between 3am and 4am

10 / 0.3

Between 4am and 5am

12 / 0.4

Between 5am and 6am

45 / 1.5

Between 6am and 7am

256 / 8.3

Between 7am and 8am

297 / 9.6

Between 8am and 9pm

3,631 / 117.1 / 8.4

Between 10pm and 11pm

98 / 3.2

Between 11pm and Midnight

57 / 1.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

19 ✔

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

44 ❌ (43)

Minimum avg. distance in miles

0.46

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

108.0 / 48.0 / 5.7 ❌ (69)

Flight holding stack identified?

No

Altitude for all flights

12,746 ❌ (17,466)

Altitude of departures between 1.5k and 15k feet

7,595 ❌ (8,466)

Altitude of flights below 20k feet

7,117 ❌ (8,790)

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

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

24.20

Fridays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:14 flight events.

23.80

Fridays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

21.70

Fridays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

19.90

Fridays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

19.20

Fridays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

19.10

Fridays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:11 flight events.

18.40

Fridays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

17.10

Saturdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

16.30

Saturdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:9 flight events.