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

01/07/2023 09:20:19

UK Postcode

SOUTH-HACKNEY , LONDON , E9 7AH

Baseline geo-coordinates

51.5436 , -0.04451

Survey type

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

Assessment band

HIGH

Assessment actual value

18.75

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

3,088 / 99.6 / 5.9 ✔

Flights above 26k feet.

693 / 22.4 / 1.3 ❌ (630)

Flights between 16k and 26k feet

262 / 8.5 / 0.5 ✔

Flights between 13k and 15k feet

118 / 3.8 / 0.2 ✔

Flights between 7k and 12k feet

133 / 4.3 / 0.3 ✔

Flights between 6k and 7k feet

264 / 8.5 / 0.5 ❌ (201)

Flights between 5k and 6k feet

862 / 27.8 / 1.6 ❌ (324)

Flights between 4k and 5k feet

481 / 15.5 / 0.9 ❌ (269)

Flights between 3k and 4k feet

72 / 2.3 / 0.1 ✔

Flights below 3k feet

203 / 6.5 / 0.4 ✔

4 or more flights per hour

194 / 6.3 ✔

9 or more flights per hour

126 / 4.1 ❌ (90)

Departures between 1.5k and 15k feet

190 / 6.1 / 0.4 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

25 / 0.8

1 AM

24 / 0.8

2 AM

10 / 0.3

3 AM

17 / 0.5

4 AM

13 / 0.4

5 AM

44 / 1.4

6 AM

129 / 4.2

7 AM

188 / 6.1

8 AM to 9 PM

2,482 / 80.1 / 5.7

10 PM

58 / 1.9

11 PM

55 / 1.8

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

37 ✔

Minimum avg. distance in miles

0.49

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

68.0 / 25.0 / 3.6 ✔

Flight holding stack identified?

No

Altitude for all flights

13,213 ❌ (15,884)

Altitude of departures between 1.5k and 15k feet

5,902 ❌ (7,444)

Altitude of flights below 20k feet

6,757 ❌ (8,037)

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

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

12.25

Friday @ 15:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.13

Thursday @ 19:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.63

Friday @ 13:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.25

Tuesday @ 21:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

6.13

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

26.67

Friday @ 11:00 - 3 time(s) in 4 weeks. Approx:15 flight events.

20.83

Friday @ 12:00 - 3 time(s) in 4 weeks. Approx:11 flight events.

19.67

Friday @ 9:00 - 3 time(s) in 4 weeks. Approx:11 flight events.