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

14/10/2022 16:46:36

UK Postcode

BROMLEY-BY-BOW-WEST , LONDON , E3 3NU

Baseline geo-coordinates

51.5193 , -0.017372

Survey type

31 days prior to: 14-Oct-2022 @15:58:01

Assessment band

VERY HIGH

Assessment actual value

28.63

Assessment description

Sound equates to a busy Dual Carriageway or Motorway i.e. very regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a flight path or primary flight corridor and subject to Arrivals and/or Departures. At times there will be multiple flight occurrences within the same hour, typically between 10 to 20.

Band range

Lower: 20.0 --> Upper: 30.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

7,226 / 233.1 / 13.7 ❌ (3,167)

Flights above 26k feet.

744 / 24.0 / 1.4 ❌ (738)

Flights between 16k and 26k feet

250 / 8.1 / 0.5 ✔

Flights between 13k and 15k feet

72 / 2.3 / 0.1 ✔

Flights between 7k and 12k feet

43 / 1.4 / 0.1 ✔

Flights between 6k and 7k feet

340 / 11.0 / 0.6 ❌ (153)

Flights between 5k and 6k feet

1,914 / 61.7 / 3.6 ❌ (214)

Flights between 4k and 5k feet

1,424 / 45.9 / 2.7 ❌ (243)

Flights between 3k and 4k feet

362 / 11.7 / 0.7 ❌ (199)

Flights below 3k feet

2,077 / 67.0 / 3.9 ❌ (598)

4 or more flights per hour

477 / 15.4 ❌ (200)

9 or more flights per hour

381 / 12.3 ❌ (76)

Departures between 1.5k and 15k feet

1,759 / 56.7 / 3.3 ❌ (402)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

26 / 0.8

Between 1am and 2am

13 / 0.4

Between 2am and 3am

20 / 0.6

Between 3am and 4am

13 / 0.4

Between 4am and 5am

17 / 0.5

Between 5am and 6am

29 / 0.9

Between 6am and 7am

347 / 11.2

Between 7am and 8am

599 / 19.3

Between 8am and 9pm

5,989 / 193.2 / 13.8

Between 10pm and 11pm

98 / 3.2

Between 11pm and Midnight

56 / 1.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

27 ✔

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

38 ✔

Minimum avg. distance in miles

0.42

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

205.0 / 79.0 / 10.8 ❌ (67)

Flight holding stack identified?

No

Altitude for all flights

7,740 ❌ (17,495)

Altitude of departures between 1.5k and 15k feet

2,624 ❌ (8,558)

Altitude of flights below 20k feet

4,587 ❌ (8,850)

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

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

44.90

Thursdays between 19:00 and 20:00 - 4 time(s) in 4 weeks. Approx:23 flight events.

43.30

Thursdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:23 flight events.

41.80

Wednesdays between 19:00 and 20:00 - 4 time(s) in 4 weeks. Approx:21 flight events.

36.50

Wednesdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:20 flight events.

35.90

Fridays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:19 flight events.

35.70

Thursdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:18 flight events.

35.60

Thursdays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:18 flight events.

35.30

Fridays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:17 flight events.

35.20

Thursdays between 20:00 and 21:00 - 4 time(s) in 4 weeks. Approx:18 flight events.