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

09/08/2022 16:26:51

UK Postcode

FARNBOROUGH-HILL , HAMPSHIRE , GU14 6RF

Baseline geo-coordinates

51.287 , -0.742706

Survey type

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

Assessment band

REGULAR

Assessment actual value

8.73

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

3,430 / 110.6 / 6.5 ❌ (3,131)

Flights above 26k feet.

1,115 / 36.0 / 2.1 ❌ (630)

Flights between 16k and 26k feet

357 / 11.5 / 0.7 ❌ (292)

Flights between 13k and 15k feet

243 / 7.8 / 0.5 ❌ (145)

Flights between 7k and 12k feet

426 / 13.7 / 0.8 ✔

Flights between 6k and 7k feet

25 / 0.8 / 0.0 ✔

Flights between 5k and 6k feet

5 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

4 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

18 / 0.6 / 0.0 ✔

Flights below 3k feet

1,237 / 39.9 / 2.3 ❌ (666)

4 or more flights per hour

147 / 4.7 ✔

9 or more flights per hour

14 / 0.5 ✔

Departures between 1.5k and 15k feet

519 / 16.7 / 1.0 ❌ (453)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

28 / 0.9

1 AM

34 / 1.1

2 AM

16 / 0.5

3 AM

11 / 0.4

4 AM

16 / 0.5

5 AM

8 / 0.3

6 AM

91 / 2.9

7 AM

188 / 6.1

8 AM to 9 PM

2,001 / 64.5 / 4.6

10 PM

80 / 2.6

11 PM

35 / 1.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

15 ✔

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

31 ✔

Minimum avg. distance in miles

0.32

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

60.0 / 20.0 / 3.2 ✔

Flight holding stack identified?

No

Altitude for all flights

20,958 ✔

Altitude of departures between 1.5k and 15k feet

5,411 ❌ (7,444)

Altitude of flights below 20k feet

8,827 ✔

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

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

9.10

Monday @ 11:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.00

Monday @ 9:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

8.90

Monday @ 17:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

8.30

Sunday @ 17:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

7.30

Tuesday @ 10:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.20

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

6.90

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

6.60

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.