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

29/04/2021 18:59:09

UK Postcode

DULWICH-EAST , LONDON , SE15 4ED

Baseline geo-coordinates

51.4624 , -0.075292

Survey type

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

Assessment band

REGULAR

Assessment actual value

9.79

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

1,080 / 34.8 / 2.0 ✔

Flights above 26k feet.

132 / 4.3 / 0.3 ✔

Flights between 16k and 26k feet

25 / 0.8 / 0.0 ✔

Flights between 13k and 15k feet

9 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

5 / 0.2 / 0.0 ✔

Flights between 6k and 7k feet

0 ✔

Flights between 5k and 6k feet

13 / 0.4 / 0.0 ✔

Flights between 4k and 5k feet

543 / 17.5 / 1.0 ❌ (205)

Flights between 3k and 4k feet

309 / 10.0 / 0.6 ❌ (170)

Flights below 3k feet

44 / 1.4 / 0.1 ✔

4 or more flights per hour

99 / 3.2 ✔

9 or more flights per hour

30 / 1.0 ✔

Departures between 1.5k and 15k feet

2 / 0.1 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

2 / 0.1

1 AM

2 AM

3 / 0.1

3 AM

1 / 0.0

4 AM

5 / 0.2

5 AM

38 / 1.2

6 AM

97 / 3.1

7 AM

74 / 2.4

8 AM to 9 PM

810 / 26.1 / 1.9

10 PM

4 / 0.1

11 PM

3 / 0.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

32 ❌ (22)

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

35 ✔

Minimum avg. distance in miles

0.37

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

28.0 / 10.0 / 1.5 ✔

Flight holding stack identified?

No

Altitude for all flights

8,637 ❌ (16,104)

Altitude of departures between 1.5k and 15k feet

7,823 ✔

Altitude of flights below 20k feet

4,411 ❌ (7,553)

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

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

12.50

Tuesday @ 6:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.50

Tuesday @ 8:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.25

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

5.88

Tuesday @ 5:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.25

Tuesday @ 19:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

17.17

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

14.17

Tuesday @ 15:00 - 3 time(s) in 4 weeks. Approx:8 flight events.

13.17

Tuesday @ 7:00 - 3 time(s) in 4 weeks. Approx:7 flight events.

12.50

Tuesday @ 10:00 - 3 time(s) in 4 weeks. Approx:7 flight events.