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

05/01/2022 15:04:57

UK Postcode

FELTON , SOMERSET , BS40 9UG

Baseline geo-coordinates

51.39 , -2.68746

Survey type

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

Assessment band

REGULAR

Assessment actual value

9.24

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

2,087 / 67.3 / 4.0 ✔

Flights above 26k feet.

40 / 1.3 / 0.1 ✔

Flights between 16k and 26k feet

84 / 2.7 / 0.2 ✔

Flights between 13k and 15k feet

29 / 0.9 / 0.1 ✔

Flights between 7k and 12k feet

100 / 3.2 / 0.2 ✔

Flights between 6k and 7k feet

19 / 0.6 / 0.0 ✔

Flights between 5k and 6k feet

23 / 0.7 / 0.0 ✔

Flights between 4k and 5k feet

19 / 0.6 / 0.0 ✔

Flights between 3k and 4k feet

32 / 1.0 / 0.1 ✔

Flights below 3k feet

1,741 / 56.2 / 3.3 ❌ (790)

4 or more flights per hour

139 / 4.5 ✔

9 or more flights per hour

9 / 0.3 ✔

Departures between 1.5k and 15k feet

363 / 11.7 / 0.7 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

13 / 0.4

1 AM

2 / 0.1

2 AM

2 / 0.1

3 AM

4 AM

5 AM

1 / 0.0

6 AM

39 / 1.3

7 AM

90 / 2.9

8 AM to 9 PM

1,059 / 34.2 / 2.4

10 PM

45 / 1.5

11 PM

23 / 0.7

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

47 ❌ (21)

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

38 ✔

Minimum avg. distance in miles

0.62

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

102.0 / 41.0 / 5.4 ❌ (78)

Flight holding stack identified?

Yes ❌

Altitude for all flights

4,875 ❌ (15,944)

Altitude of departures between 1.5k and 15k feet

1,823 ❌ (7,614)

Altitude of flights below 20k feet

3,162 ❌ (7,929)

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

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

17.60

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

14.90

Monday @ 7:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

14.50

Monday @ 17:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

12.90

Monday @ 11:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

12.80

Tuesday @ 12:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

12.30

Tuesday @ 13:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

11.60

Tuesday @ 7:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.10

Monday @ 14:00 - 4 time(s) in 4 weeks. Approx:8 flight events.