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

10/05/2023 17:17:44

UK Postcode

TILFORD , SURREY , GU10 2AE

Baseline geo-coordinates

51.1936 , -0.747535

Survey type

31 days prior to: 10-May-2023 @16:47:10

Assessment band

REGULAR

Assessment actual value

10.27

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

3,595 / 116.0 / 6.8 ❌ (3,171)

Flights above 26k feet.

1,394 / 45.0 / 2.6 ❌ (747)

Flights between 16k and 26k feet

191 / 6.2 / 0.4 ✔

Flights between 13k and 15k feet

345 / 11.1 / 0.7 ❌ (179)

Flights between 7k and 12k feet

684 / 22.1 / 1.3 ❌ (544)

Flights between 6k and 7k feet

34 / 1.1 / 0.1 ✔

Flights between 5k and 6k feet

67 / 2.2 / 0.1 ✔

Flights between 4k and 5k feet

327 / 10.5 / 0.6 ❌ (236)

Flights between 3k and 4k feet

390 / 12.6 / 0.7 ❌ (192)

Flights below 3k feet

163 / 5.3 / 0.3 ✔

4 or more flights per hour

282 / 9.1 ❌ (202)

9 or more flights per hour

40 / 1.3 ✔

Departures between 1.5k and 15k feet

752 / 24.3 / 1.4 ❌ (394)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

22 / 0.7

Between 1am and 2am

14 / 0.5

Between 2am and 3am

5 / 0.2

Between 3am and 4am

1 / 0.0

Between 4am and 5am

7 / 0.2

Between 5am and 6am

10 / 0.3

Between 6am and 7am

91 / 2.9

Between 7am and 8am

228 / 7.4

Between 8am and 9pm

3,054 / 98.5 / 7.0

Between 10pm and 11pm

83 / 2.7

Between 11pm and Midnight

52 / 1.7

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

15 ✔

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

31 ✔

Minimum avg. distance in miles

0.49

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

62.0 / 21.0 / 3.3 ✔

Flight holding stack identified?

No

Altitude for all flights

18,701 ✔

Altitude of departures between 1.5k and 15k feet

7,627 ❌ (8,474)

Altitude of flights below 20k feet

8,262 ❌ (8,833)

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

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

13.70

Tuesdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:8 flight events.

12.20

Tuesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:7 flight events.

11.80

Wednesdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.80

Wednesdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.70

Tuesdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.90

Tuesdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

9.40

Wednesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

9.30

Wednesdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:5 flight events.