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

14/02/2025 14:51:26

UK Postcode

CHIDDINGFORD , SURREY , GU8 4UF

Baseline geo-coordinates

51.1121 , -0.627797

Survey type

31 days prior to: 01-Sep-2024 @00:06:11

Assessment band

INTERMITTENT

Assessment actual value

6.24

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,520 / 81.3 / 4.8 ✔

Flights above 26k feet.

1,021 / 32.9 / 1.9 ❌ (755)

Flights between 16k and 26k feet

266 / 8.6 / 0.5 ✔

Flights between 13k and 15k feet

318 / 10.3 / 0.6 ❌ (179)

Flights between 7k and 12k feet

749 / 24.2 / 1.4 ❌ (547)

Flights between 6k and 7k feet

19 / 0.6 / 0.0 ✔

Flights between 5k and 6k feet

19 / 0.6 / 0.0 ✔

Flights between 4k and 5k feet

7 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

3 / 0.1 / 0.0 ✔

Flights below 3k feet

118 / 3.8 / 0.2 ✔

4 or more flights per hour

164 / 5.3 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

793 / 25.6 / 1.5 ❌ (399)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

15 / 0.5

Between 1am and 2am

15 / 0.5

Between 2am and 3am

7 / 0.2

Between 3am and 4am

6 / 0.2

Between 4am and 5am

7 / 0.2

Between 5am and 6am

17 / 0.5

Between 6am and 7am

138 / 4.5

Between 7am and 8am

175 / 5.6

Between 8am and 9pm

1,987 / 64.1 / 4.6

Between 10pm and 11pm

78 / 2.5

Between 11pm and Midnight

50 / 1.6

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

18 ✔

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

41 ✔

Minimum avg. distance in miles

0.49

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

32.0 / 13.0 / 1.7 ✔

Flight holding stack identified?

No

Altitude for all flights

21,015 ✔

Altitude of departures between 1.5k and 15k feet

10,921 ✔

Altitude of flights below 20k feet

11,189 ✔

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

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

6.70

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

5.60

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

5.10

Saturdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

8.00

Tuesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

7.00

Wednesdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.88

Fridays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

5.75

Mondays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

5.63

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

5.25

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