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

16/11/2023 16:12:04

UK Postcode

CROSSWAY-PARK , LONDON , SE28 8PT

Baseline geo-coordinates

51.5114 , 0.123548

Survey type

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

Assessment band

REGULAR

Assessment actual value

10.20

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

3,085 / 99.5 / 5.9 ✔

Flights above 26k feet.

623 / 20.1 / 1.2 ✔

Flights between 16k and 26k feet

145 / 4.7 / 0.3 ✔

Flights between 13k and 15k feet

58 / 1.9 / 0.1 ✔

Flights between 7k and 12k feet

24 / 0.8 / 0.0 ✔

Flights between 6k and 7k feet

128 / 4.1 / 0.2 ✔

Flights between 5k and 6k feet

79 / 2.5 / 0.1 ✔

Flights between 4k and 5k feet

15 / 0.5 / 0.0 ✔

Flights between 3k and 4k feet

3 / 0.1 / 0.0 ✔

Flights below 3k feet

2,010 / 64.8 / 3.8 ❌ (667)

4 or more flights per hour

314 / 10.1 ❌ (215)

9 or more flights per hour

53 / 1.7 ✔

Departures between 1.5k and 15k feet

387 / 12.5 / 0.7 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

16 / 0.5

1 AM

15 / 0.5

2 AM

12 / 0.4

3 AM

14 / 0.5

4 AM

27 / 0.9

5 AM

62 / 2.0

6 AM

100 / 3.2

7 AM

224 / 7.2

8 AM to 9 PM

2,433 / 78.5 / 5.6

10 PM

76 / 2.5

11 PM

50 / 1.6

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

36 ✔

Minimum avg. distance in miles

0.48

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

76.0 / 28.0 / 4.0 ❌ (72)

Flight holding stack identified?

No

Altitude for all flights

9,718 ❌ (15,823)

Altitude of departures between 1.5k and 15k feet

2,904 ❌ (7,474)

Altitude of flights below 20k feet

3,113 ❌ (7,986)

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

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

19.50

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

19.20

Tuesday @ 18:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

18.30

Wednesday @ 18:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

17.80

Thursday @ 18:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

17.00

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

16.60

Thursday @ 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

16.00

Wednesday @ 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

15.40

Wednesday @ 7:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

14.60

Tuesday @ 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.