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

07/12/2021 23:55:51

UK Postcode

OXTED , SURREY , RH8 0EX

Baseline geo-coordinates

51.2561 , 0.006528

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

5.15

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

870 / 28.1 / 1.7 ✔

Flights above 26k feet.

199 / 6.4 / 0.4 ✔

Flights between 16k and 26k feet

110 / 3.5 / 0.2 ✔

Flights between 13k and 15k feet

114 / 3.7 / 0.2 ❌ (48)

Flights between 7k and 12k feet

292 / 9.4 / 0.6 ❌ (157)

Flights between 6k and 7k feet

7 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

15 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

34 / 1.1 / 0.1 ✔

Flights between 3k and 4k feet

19 / 0.6 / 0.0 ✔

Flights below 3k feet

80 / 2.6 / 0.2 ✔

4 or more flights per hour

31 / 1.0 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

361 / 11.6 / 0.7 ❌ (163)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

3 / 0.1

2 AM

1 / 0.0

3 AM

4 / 0.1

4 AM

5 / 0.2

5 AM

7 / 0.2

6 AM

25 / 0.8

7 AM

51 / 1.6

8 AM to 9 PM

701 / 22.6 / 1.6

10 PM

25 / 0.8

11 PM

12 / 0.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

17 ✔

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

48 ❌ (41)

Minimum avg. distance in miles

0.46

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

11.0 / 5.0 / 0.6 ✔

Flight holding stack identified?

No

Altitude for all flights

16,887 ✔

Altitude of departures between 1.5k and 15k feet

11,605 ✔

Altitude of flights below 20k feet

10,892 ✔

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

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

4.50

Thursday @ 12:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

6.17

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

5.67

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

4.33

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

3.00

Tuesday @ 20:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

7.75

Sunday @ 20:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

7.50

Thursday @ 9:00 - 2 time(s) in 4 weeks. Approx:5 flight events.