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

06/06/2023 08:12:58

UK Postcode

HEATHFIELD , EAST SUSSEX , TN21 8JD

Baseline geo-coordinates

50.9674 , 0.22458

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.95

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

3,614 / 116.6 / 6.9 ❌ (3,131)

Flights above 26k feet.

158 / 5.1 / 0.3 ✔

Flights between 16k and 26k feet

349 / 11.3 / 0.7 ❌ (292)

Flights between 13k and 15k feet

40 / 1.3 / 0.1 ✔

Flights between 7k and 12k feet

2,934 / 94.6 / 5.6 ❌ (451)

Flights between 6k and 7k feet

77 / 2.5 / 0.1 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

0 ✔

Flights between 3k and 4k feet

0 ✔

Flights below 3k feet

52 / 1.7 / 0.1 ✔

4 or more flights per hour

383 / 12.4 ❌ (214)

9 or more flights per hour

149 / 4.8 ❌ (90)

Departures between 1.5k and 15k feet

4 / 0.1 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

57 / 1.8

1 AM

36 / 1.2

2 AM

9 / 0.3

3 AM

9 / 0.3

4 AM

3 / 0.1

5 AM

16 / 0.5

6 AM

46 / 1.5

7 AM

118 / 3.8

8 AM to 9 PM

2,963 / 95.6 / 6.8

10 PM

159 / 5.1

11 PM

187 / 6.0

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

26 ❌ (22)

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

51 ❌ (41)

Minimum avg. distance in miles

0.37

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

98.0 / 50.0 / 5.2 ❌ (72)

Flight holding stack identified?

Yes ❌

Altitude for all flights

11,263 ❌ (15,884)

Altitude of departures between 1.5k and 15k feet

5,144 ❌ (7,444)

Altitude of flights below 20k feet

9,083 ✔

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

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

17.80

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

16.70

Sunday @ 16:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

15.10

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

13.90

Sunday @ 12:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

13.80

Monday @ 14:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

13.40

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

13.00

Sunday @ 19:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

11.80

Sunday @ 14:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.40

Sunday @ 17:00 - 4 time(s) in 4 weeks. Approx:8 flight events.