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

04/01/2022 18:13:44

UK Postcode

LANGHAM , ESSEX , CO4 5PB

Baseline geo-coordinates

51.9467 , 0.943795

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

5.77

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

1,399 / 45.1 / 2.7 ✔

Flights above 26k feet.

383 / 12.4 / 0.7 ✔

Flights between 16k and 26k feet

555 / 17.9 / 1.1 ❌ (306)

Flights between 13k and 15k feet

52 / 1.7 / 0.1 ✔

Flights between 7k and 12k feet

380 / 12.3 / 0.7 ✔

Flights between 6k and 7k feet

0 ✔

Flights between 5k and 6k feet

0 ✔

Flights between 4k and 5k feet

3 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

4 / 0.1 / 0.0 ✔

Flights below 3k feet

22 / 0.7 / 0.0 ✔

4 or more flights per hour

54 / 1.7 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

14 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

26 / 0.8

1 AM

12 / 0.4

2 AM

15 / 0.5

3 AM

19 / 0.6

4 AM

12 / 0.4

5 AM

10 / 0.3

6 AM

78 / 2.5

7 AM

66 / 2.1

8 AM to 9 PM

986 / 31.8 / 2.3

10 PM

113 / 3.6

11 PM

47 / 1.5

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

56 ❌ (42)

Minimum avg. distance in miles

0.46

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

7.0 / 4.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

20,964 ✔

Altitude of departures between 1.5k and 15k feet

10,828 ✔

Altitude of flights below 20k feet

11,842 ✔

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

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

6.67

Wednesday @ 22:00 - 3 time(s) in 4 weeks. Approx:5 flight events.

4.67

Wednesday @ 13:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.67

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

5.75

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

5.50

Tuesday @ 22:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

4.75

Sunday @ 13:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

4.50

Sunday @ 22:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.75

Saturday @ 21:00 - 2 time(s) in 4 weeks. Approx:3 flight events.