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 days prior to: 01-Sep-2023 @00:24:35

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 ❌ (738)

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 ❌ (153)

Flights between 5k and 6k feet

252 / 8.1 / 0.5 ❌ (214)

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.

Between Midnight and 1am

27 / 0.9

Between 1am and 2am

16 / 0.5

Between 2am and 3am

13 / 0.4

Between 3am and 4am

15 / 0.5

Between 4am and 5am

6 / 0.2

Between 5am and 6am

18 / 0.6

Between 6am and 7am

139 / 4.5

Between 7am and 8am

132 / 4.3

Between 8am and 9pm

1,826 / 58.9 / 4.2

Between 10pm and 11pm

66 / 2.1

Between 11pm and Midnight

42 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

17 ✔

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

47 ❌ (44)

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 ❌ (17,495)

Altitude of departures between 1.5k and 15k feet

11,055 ✔

Altitude of flights below 20k feet

7,773 ❌ (8,850)

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

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

8.50

Tuesdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

5.90

Wednesdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:3 flight events.

10.00

Wednesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.75

Tuesdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:6 flight events.

9.50

Saturdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:5 flight events.

9.25

Sundays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.88

Fridays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:5 flight events.

8.63

Sundays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:5 flight events.