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 15:41:30

UK Postcode

ALEXANDRA-PARK-EAST-2019 , LONDON , N10 2QG

Baseline geo-coordinates

51.5972 , -0.135742

Survey type

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

Assessment band

HIGH

Assessment actual value

18.57

Assessment description

Sound equates to a busy "A" road or Dual Carriageway i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary flight corridor or busy flight route or in a flight holding stack area. At times there will be multiple flight occurrences within the same hour, typically between 4-15. Some of the flights will be below 7000 feet.

Band range

Lower: 16.0 --> Upper: 20.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

4,593 / 148.2 / 8.7 ❌ (1,849)

Flights above 26k feet.

867 / 28.0 / 1.6 ❌ (381)

Flights between 16k and 26k feet

293 / 9.5 / 0.6 ❌ (175)

Flights between 13k and 15k feet

172 / 5.5 / 0.3 ❌ (80)

Flights between 7k and 12k feet

886 / 28.6 / 1.7 ❌ (228)

Flights between 6k and 7k feet

1,487 / 48.0 / 2.8 ❌ (132)

Flights between 5k and 6k feet

804 / 25.9 / 1.5 ❌ (210)

Flights between 4k and 5k feet

50 / 1.6 / 0.1 ✔

Flights between 3k and 4k feet

5 / 0.2 / 0.0 ✔

Flights below 3k feet

29 / 0.9 / 0.1 ✔

4 or more flights per hour

350 / 11.3 ❌ (127)

9 or more flights per hour

201 / 6.5 ❌ (49)

Departures between 1.5k and 15k feet

169 / 5.5 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

12 / 0.4

1 AM

17 / 0.5

2 AM

8 / 0.3

3 AM

6 / 0.2

4 AM

7 / 0.2

5 AM

43 / 1.4

6 AM

190 / 6.1

7 AM

233 / 7.5

8 AM to 9 PM

3,891 / 125.5 / 9.0

10 PM

121 / 3.9

11 PM

52 / 1.7

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

18 ✔

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

42 ❌ (41)

Minimum avg. distance in miles

0.47

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

110.0 / 46.0 / 5.8 ❌ (41)

Flight holding stack identified?

No

Altitude for all flights

12,864 ❌ (16,135)

Altitude of departures between 1.5k and 15k feet

6,760 ❌ (7,666)

Altitude of flights below 20k feet

7,258 ❌ (7,566)

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

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

20.60

Monday @ 13:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

18.90

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

18.50

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

17.00

Monday @ 17:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

14.50

Tuesday @ 10:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

13.40

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

13.00

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

12.90

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