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

19/11/2023 17:51:42

UK Postcode

WALTHAMSTOW-CENTRAL-9BL , LONDON , E17 3BH

Baseline geo-coordinates

51.5887 , -0.015578

Survey type

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

Assessment band

REGULAR

Assessment actual value

8.50

Assessment description

Sound equates to a "B" road or busy "C" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a secondary 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 4. Some of the flights will be below 7000 feet.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,316 / 74.7 / 4.4 ✔

Flights above 26k feet.

763 / 24.6 / 1.4 ❌ (631)

Flights between 16k and 26k feet

204 / 6.6 / 0.4 ✔

Flights between 13k and 15k feet

51 / 1.6 / 0.1 ✔

Flights between 7k and 12k feet

398 / 12.8 / 0.8 ✔

Flights between 6k and 7k feet

607 / 19.6 / 1.2 ❌ (202)

Flights between 5k and 6k feet

252 / 8.1 / 0.5 ✔

Flights between 4k and 5k feet

12 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

5 / 0.2 / 0.0 ✔

Flights below 3k feet

24 / 0.8 / 0.0 ✔

4 or more flights per hour

172 / 5.5 ✔

9 or more flights per hour

15 / 0.5 ✔

Departures between 1.5k and 15k feet

16 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

27 / 0.9

1 AM

16 / 0.5

2 AM

13 / 0.4

3 AM

15 / 0.5

4 AM

6 / 0.2

5 AM

18 / 0.6

6 AM

139 / 4.5

7 AM

132 / 4.3

8 AM to 9 PM

1,826 / 58.9 / 4.2

10 PM

66 / 2.1

11 PM

42 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

47 ❌ (42)

Minimum avg. distance in miles

0.49

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

42.0 / 20.0 / 2.2 ✔

Flight holding stack identified?

No

Altitude for all flights

17,044 ✔

Altitude of departures between 1.5k and 15k feet

11,055 ✔

Altitude of flights below 20k feet

7,773 ❌ (7,986)

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

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

8.50

Tuesday @ 17:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

5.90

Wednesday @ 6:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

10.00

Wednesday @ 11:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.75

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

9.50

Wednesday @ 7:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

9.25

Sunday @ 16:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.88

Friday @ 7:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.63

Sunday @ 17:00 - 4 time(s) in 4 weeks. Approx:5 flight events.