Assessment ScoreCard – Full

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

29/10/2020 12:05:09

UK Postcode

TONBRIDGE , KENT , TN9 1EH

Baseline geo-coordinates

51.194 , 0.273498

Survey type

Full. Based on 93 days in 2019, during Mid Dec to Mid Jan, whole of April and August.

Assessment band

FREQUENT

Assessment actual value

12.30

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

11,661 / 125.4 / 7.4 ❌ (6,666)

Flights above 26k feet.

1,089 / 11.7 / 0.7 ✔

Flights between 16k and 26k feet

549 / 5.9 / 0.3 ✔

Flights between 13k and 15k feet

3,545 / 38.1 / 2.2 ❌ (358)

Flights between 7k and 12k feet

5,122 / 55.1 / 3.2 ❌ (1,218)

Flights between 6k and 7k feet

88 / 0.9 / 0.1 ✔

Flights between 5k and 6k feet

369 / 4.0 / 0.2 ✔

Flights between 4k and 5k feet

528 / 5.7 / 0.3 ✔

Flights between 3k and 4k feet

148 / 1.6 / 0.1 ✔

Flights below 3k feet

223 / 2.4 / 0.1 ✔

4 or more flights per hour

1,340 / 14.4 ❌ (425)

9 or more flights per hour

365 / 3.9 ❌ (168)

Departures between 1.5k and 15k feet

3,503 / 37.7 / 2.2 ❌ (1,050)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

48 / 0.5

1 AM

34 / 0.4

2 AM

19 / 0.2

3 AM

26 / 0.3

4 AM

62 / 0.7

5 AM

258 / 2.8

6 AM

578 / 6.2

7 AM

794 / 8.5

8 AM to 9 PM

9,347 / 100.5 / 7.2

10 PM

333 / 3.6

11 PM

134 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

15 ✔

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

49 ❌ (44)

Minimum avg. distance in miles

0.76

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

109.0 / 54.0 / 5.7 ❌ (50)

Flight holding stack identified?

No

Altitude for all flights

13,637 ❌ (19,038)

Altitude of departures between 1.5k and 15k feet

11,704 ✔

Altitude of flights below 20k feet

11,630 ✔

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

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

10.89

Monday @ 10:00 - 13 time(s) in 13 weeks. Approx:8 flight events.

10.04

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

9.82

Monday @ 16:00 - 13 time(s) in 13 weeks. Approx:7 flight events.

9.64

Tuesday @ 12:00 - 13 time(s) in 13 weeks. Approx:7 flight events.

8.96

Tuesday @ 16:00 - 13 time(s) in 13 weeks. Approx:7 flight events.

8.64

Tuesday @ 17:00 - 13 time(s) in 13 weeks. Approx:6 flight events.

8.18

Monday @ 21:00 - 13 time(s) in 13 weeks. Approx:6 flight events.

8.14

Tuesday @ 19:00 - 13 time(s) in 13 weeks. Approx:6 flight events.

12.73

Saturday @ 12:00 - 13 time(s) in 13 weeks. Approx:9 flight events.