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

21/11/2021 17:08:11

UK Postcode

EAST-GRINSTEAD-CENTRAL , WEST SUSSEX , RH19 1DJ

Baseline geo-coordinates

51.1282 , -0.016048

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

OCCASIONAL

Assessment actual value

5.02

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

1,225 / 39.5 / 2.3 ✔

Flights above 26k feet.

201 / 6.5 / 0.4 ✔

Flights between 16k and 26k feet

954 / 30.8 / 1.8 ❌ (305)

Flights between 13k and 15k feet

21 / 0.7 / 0.0 ✔

Flights between 7k and 12k feet

36 / 1.2 / 0.1 ✔

Flights between 6k and 7k feet

2 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

4 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

2 / 0.1 / 0.0 ✔

4 or more flights per hour

69 / 2.2 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

49 / 1.6 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

1 / 0.0

2 AM

2 / 0.1

3 AM

9 / 0.3

4 AM

2 / 0.1

5 AM

9 / 0.3

6 AM

35 / 1.1

7 AM

74 / 2.4

8 AM to 9 PM

1,000 / 32.3 / 2.3

10 PM

59 / 1.9

11 PM

21 / 0.7

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

16 ✔

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

50 ❌ (42)

Minimum avg. distance in miles

0.63

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

8.0 / 4.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

21,889 ✔

Altitude of departures between 1.5k and 15k feet

12,157 ✔

Altitude of flights below 20k feet

19,041 ✔

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

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

6.17

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

5.33

Saturday @ 11:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

5.00

Sunday @ 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.67

Friday @ 11:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

4.00

Saturday @ 15:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

3.67

Friday @ 12:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

6.50

Friday @ 17:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

6.00

Friday @ 15:00 - 2 time(s) in 4 weeks. Approx:4 flight events.