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

16/10/2024 11:59:09

UK Postcode

CHIGWELL , ESSEX , IG7 6QF

Baseline geo-coordinates

51.6262 , 0.080661

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

FREQUENT

Assessment actual value

12.82

Assessment description

Likely to encounter both 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: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

4,526 / 146.0 / 8.6 ❌ (3,399)

Flights above 26k feet.

1,096 / 35.4 / 2.1 ❌ (720)

Flights between 16k and 26k feet

241 / 7.8 / 0.5 ✔

Flights between 13k and 15k feet

361 / 11.6 / 0.7 ❌ (167)

Flights between 7k and 12k feet

2,665 / 86.0 / 5.1 ❌ (490)

Flights between 6k and 7k feet

12 / 0.4 / 0.0 ✔

Flights between 5k and 6k feet

5 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

4 / 0.1 / 0.0 ✔

Flights below 3k feet

136 / 4.4 / 0.3 ✔

4 or more flights per hour

345 / 11.1 ❌ (217)

9 or more flights per hour

159 / 5.1 ❌ (90)

Departures between 1.5k and 15k feet

42 / 1.4 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

24 / 0.8

1 AM

11 / 0.4

2 AM

6 / 0.2

3 AM

8 / 0.3

4 AM

6 / 0.2

5 AM

77 / 2.5

6 AM

159 / 5.1

7 AM

233 / 7.5

8 AM to 9 PM

3,863 / 124.6 / 8.9

10 PM

74 / 2.4

11 PM

35 / 1.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

21 ✔

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

40 ✔

Minimum avg. distance in miles

0.57

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

102.0 / 41.0 / 5.4 ❌ (77)

Flight holding stack identified?

Yes ❌

Altitude for all flights

16,549 ✔

Altitude of departures between 1.5k and 15k feet

10,062 ✔

Altitude of flights below 20k feet

10,582 ✔

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

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

17.70

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

16.40

Monday @ 14:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

14.90

Tuesday @ 12:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

14.50

Sunday @ 15:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

14.30

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

14.00

Tuesday @ 15:00 - 4 time(s) in 4 weeks. Approx:10 flight events.

12.60

Tuesday @ 14:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

12.50

Sunday @ 16:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

11.20

Tuesday @ 13:00 - 4 time(s) in 4 weeks. Approx:8 flight events.