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

06/01/2022 17:48:53

UK Postcode

NUTFIELD , SURREY , RH1 5RP

Baseline geo-coordinates

51.2212 , -0.13215

Survey type

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

Assessment band

REGULAR

Assessment actual value

11.24

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

3,113 / 100.4 / 5.9 ✔

Flights above 26k feet.

285 / 9.2 / 0.5 ✔

Flights between 16k and 26k feet

984 / 31.7 / 1.9 ❌ (308)

Flights between 13k and 15k feet

39 / 1.3 / 0.1 ✔

Flights between 7k and 12k feet

1,004 / 32.4 / 1.9 ❌ (435)

Flights between 6k and 7k feet

175 / 5.6 / 0.3 ✔

Flights between 5k and 6k feet

157 / 5.1 / 0.3 ✔

Flights between 4k and 5k feet

163 / 5.3 / 0.3 ✔

Flights between 3k and 4k feet

211 / 6.8 / 0.4 ✔

Flights below 3k feet

95 / 3.1 / 0.2 ✔

4 or more flights per hour

368 / 11.9 ❌ (209)

9 or more flights per hour

73 / 2.4 ✔

Departures between 1.5k and 15k feet

1,552 / 50.1 / 2.9 ❌ (421)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

6 / 0.2

1 AM

2 / 0.1

2 AM

3 / 0.1

3 AM

9 / 0.3

4 AM

4 / 0.1

5 AM

17 / 0.5

6 AM

88 / 2.8

7 AM

210 / 6.8

8 AM to 9 PM

2,630 / 84.8 / 6.1

10 PM

72 / 2.3

11 PM

28 / 0.9

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

38 ✔

Minimum avg. distance in miles

0.53

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

79.0 / 30.0 / 4.2 ❌ (77)

Flight holding stack identified?

No

Altitude for all flights

13,840 ❌ (15,992)

Altitude of departures between 1.5k and 15k feet

7,832 ✔

Altitude of flights below 20k feet

11,362 ✔

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

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

12.80

Wednesday @ 9:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

12.40

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

12.00

Wednesday @ 7:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.40

Tuesday @ 9:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.60

Wednesday @ 12:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.10

Thursday @ 13:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

9.90

Thursday @ 15:00 - 4 time(s) in 4 weeks. Approx:6 flight events.