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

07/02/2022 17:46:44

UK Postcode

GROOMBRIDGE , KENT , TN3 9QG

Baseline geo-coordinates

51.1173 , 0.189476

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

5.46

Assessment description

Sound equates to a "C" road or an active country lane i.e. irregular traffic volumes. Location is on a flight route as opposed to a flight corridor. Some of the flights will be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

856 / 27.6 / 1.6 ✔

Flights above 26k feet.

148 / 4.8 / 0.3 ✔

Flights between 16k and 26k feet

38 / 1.2 / 0.1 ✔

Flights between 13k and 15k feet

50 / 1.6 / 0.1 ✔

Flights between 7k and 12k feet

105 / 3.4 / 0.2 ✔

Flights between 6k and 7k feet

7 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

75 / 2.4 / 0.1 ✔

Flights between 4k and 5k feet

274 / 8.8 / 0.5 ❌ (205)

Flights between 3k and 4k feet

125 / 4.0 / 0.2 ✔

Flights below 3k feet

34 / 1.1 / 0.1 ✔

4 or more flights per hour

46 / 1.5 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

36 / 1.2 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

7 / 0.2

1 AM

2 / 0.1

2 AM

1 / 0.0

3 AM

7 / 0.2

4 AM

3 / 0.1

5 AM

20 / 0.6

6 AM

14 / 0.5

7 AM

55 / 1.8

8 AM to 9 PM

693 / 22.4 / 1.6

10 PM

36 / 1.2

11 PM

8 / 0.3

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

21 ✔

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

69 ❌ (41)

Minimum avg. distance in miles

0.48

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

16.0 / 11.0 / 0.8 ✔

Flight holding stack identified?

No

Altitude for all flights

11,893 ❌ (16,135)

Altitude of departures between 1.5k and 15k feet

12,311 ✔

Altitude of flights below 20k feet

6,530 ❌ (7,566)

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

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

8.00

Sunday @ 11:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.38

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

6.50

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

5.25

Saturday @ 16:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.63

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

4.13

Saturday @ 14:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

3.88

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

3.38

Saturday @ 21:00 - 4 time(s) in 4 weeks. Approx:2 flight events.