Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of between 30 and 40 dBs i.e. a quiet residential area. Typically the noise from an overflying aircraft is between 50-65 dBs. If your property is located near to a busy road i.e. 70-75 dBs, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Overflying aircraft noise typically has a duration of 30-50 seconds, the higher the plane the longer the duration. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

26/10/2025 19:13:28

UK Postcode Area

MIDDLETON-SUDBURY, ESSEX, CO10 7LN

Baseline geo-coordinates

52.0246 , 0.728027

Survey type

31 days prior to: 26-Oct-2025 @00:53:30

Assessment band

REGULAR

Assessment actual value

7.13

Assessment description

Will encounter some night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,243 / 72.4 / 4.3 ✔

Flights above 26k feet.

221 / 7.1 / 0.4 ✔

Flights between 16k and 26k feet

297 / 9.6 / 0.6 ✔

Flights between 13k and 15k feet

46 / 1.5 / 0.1 ✔

Flights between 7k and 12k feet

1,427 / 46.0 / 2.7 ❌ (560)

Flights between 6k and 7k feet

231 / 7.5 / 0.4 ❌ (165)

Flights between 5k and 6k feet

3 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

0 ✔

Flights between 3k and 4k feet

3 / 0.1 / 0.0 ✔

Flights below 3k feet

15 / 0.5 / 0.0 ✔

4 or more flights per hour

251 / 8.1 ❌ (206)

9 or more flights per hour

18 / 0.6 ✔

Departures between 1.5k and 15k feet

5 / 0.2 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

52 / 1.7

Between 1am and 2am

25 / 0.8

Between 2am and 3am

13 / 0.4

Between 3am and 4am

6 / 0.2

Between 4am and 5am

12 / 0.4

Between 5am and 6am

7 / 0.2

Between 6am and 7am

79 / 2.5

Between 7am and 8am

121 / 3.9

Between 8am and 9pm

1,744 / 56.3 / 4.0

Between 10pm and 11pm

90 / 2.9

Between 11pm and Midnight

86 / 2.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

21 ✔

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

48 ❌ (43)

Minimum avg. distance in miles

0.57

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

51.0 / 24.0 / 2.7 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

12,840 ❌ (17,615)

Altitude of departures between 1.5k and 15k feet

12,485 ✔

Altitude of flights below 20k feet

8,757 ❌ (8,784)

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

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

9.30

Fridays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

8.20

Thursdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.80

Thursdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.40

Fridays between 19:00 and 20:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.20

Thursdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

6.10

Thursdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:4 flight events.

6.00

Thursdays between 21:00 and 22:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

5.40

Thursdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:4 flight events.