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

09/02/2025 08:22:42

UK Postcode

CRANBROOK , KENT , TN17 3HF

Baseline geo-coordinates

51.096 , 0.536974

Survey type

31 days prior to: 01-Sep-2024 @00:57:19

Assessment band

MINIMAL

Assessment actual value

3.88

Assessment description

Might encounter some day-time irregular noise disturbances that are caused by the volumes of planes overflying.

Band range

Lower: 0.5 --> Upper: 4.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,132 / 36.5 / 2.1 ✔

Flights above 26k feet.

608 / 19.6 / 1.2 ✔

Flights between 16k and 26k feet

177 / 5.7 / 0.3 ✔

Flights between 13k and 15k feet

158 / 5.1 / 0.3 ✔

Flights between 7k and 12k feet

85 / 2.7 / 0.2 ✔

Flights between 6k and 7k feet

10 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

1 / 0.0 / 0.0 ✔

Flights between 4k and 5k feet

0 ✔

Flights between 3k and 4k feet

5 / 0.2 / 0.0 ✔

Flights below 3k feet

88 / 2.8 / 0.2 ✔

4 or more flights per hour

9 / 0.3 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

71 / 2.3 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

19 / 0.6

Between 1am and 2am

4 / 0.1

Between 2am and 3am

6 / 0.2

Between 3am and 4am

13 / 0.4

Between 4am and 5am

11 / 0.4

Between 5am and 6am

20 / 0.6

Between 6am and 7am

61 / 2.0

Between 7am and 8am

75 / 2.4

Between 8am and 9pm

833 / 26.9 / 1.9

Between 10pm and 11pm

33 / 1.1

Between 11pm and Midnight

12 / 0.4

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

21 ✔

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

46 ❌ (44)

Minimum avg. distance in miles

0.50

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

6.0 / 3.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

24,711 ✔

Altitude of departures between 1.5k and 15k feet

12,912 ✔

Altitude of flights below 20k feet

12,283 ✔

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

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

4.00

Wednesdays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

2.83

Thursdays between 12:00 and 13:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

2.50

Wednesdays between 9:00 and 10:00- 3 time(s) in 4 weeks. Approx:2 flight events.

5.25

Wednesdays between 10:00 and 11:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

5.00

Thursdays between 14:00 and 15:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

4.25

Tuesdays between 6:00 and 7:00- 2 time(s) in 4 weeks. Approx:3 flight events.

3.25

Sundays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:3 flight events.