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

21/12/2021 10:27:15

UK Postcode

STOCK , ESSEX , CM4 9BD

Baseline geo-coordinates

51.6648 , 0.446889

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

FREQUENT

Assessment actual value

13.09

Assessment description

Sound equates to an "A" road or a busy "B" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary 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 between 4-10. Some of the flights will be below 7000 feet.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

5,135 / 165.6 / 9.7 ❌ (3,135)

Flights above 26k feet.

729 / 23.5 / 1.4 ❌ (634)

Flights between 16k and 26k feet

215 / 6.9 / 0.4 ✔

Flights between 13k and 15k feet

362 / 11.7 / 0.7 ❌ (135)

Flights between 7k and 12k feet

3,754 / 121.1 / 7.1 ❌ (431)

Flights between 6k and 7k feet

26 / 0.8 / 0.0 ✔

Flights between 5k and 6k feet

12 / 0.4 / 0.0 ✔

Flights between 4k and 5k feet

8 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

0 ✔

Flights below 3k feet

29 / 0.9 / 0.1 ✔

4 or more flights per hour

443 / 14.3 ❌ (203)

9 or more flights per hour

273 / 8.8 ❌ (83)

Departures between 1.5k and 15k feet

83 / 2.7 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

16 / 0.5

1 AM

7 / 0.2

2 AM

8 / 0.3

3 AM

9 / 0.3

4 AM

36 / 1.2

5 AM

67 / 2.2

6 AM

302 / 9.7

7 AM

403 / 13.0

8 AM to 9 PM

4,187 / 135.1 / 9.6

10 PM

56 / 1.8

11 PM

24 / 0.8

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

20 ✔

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

41 ✔

Minimum avg. distance in miles

0.30

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

134.0 / 55.0 / 7.1 ❌ (72)

Flight holding stack identified?

No

Altitude for all flights

14,535 ❌ (16,202)

Altitude of departures between 1.5k and 15k feet

8,489 ✔

Altitude of flights below 20k feet

11,063 ✔

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

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

19.20

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

18.50

Sunday @ 17:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

17.30

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

17.20

Tuesday @ 8:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

16.80

Monday @ 8:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

15.90

Sunday @ 18:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

15.20

Tuesday @ 7:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

14.70

Sunday @ 19:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

14.50

Monday @ 13:00 - 4 time(s) in 4 weeks. Approx:10 flight events.