Assessment ScoreCard – 31 Day

Aircraft Traffic Assessment: 31 Day Scorecard



The symbol indicates the measure is better than the average when compared with other assessed
UK postcodes. The ❌ represents the opposite. Assessed averages are shown in brackets.

See: for a full explanation about the Assessment scorecard.

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

09/03/2023 09:27:17

UK Postcode

CRONDALL-JUN-22 , HAMPSHIRE , GU10 5QU

Baseline geo-coordinates

51.2343 , -0.860853

Survey type

31 days prior to: 01-Jul-2022 @01:51:07

Assessment band

FREQUENT

Assessment actual value

14.78

Assessment description

Sound equates to an "A" road or a busy "B" road i.e. regular traffic that will be noticeable at peak times which includes evenings and weekends. Location is on a primary 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 between 4-10. Some of the flights will be below 7000 feet.

Band range

Lower: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

3,414 / 110.1 / 6.5 (3,171)

Flights above 26k feet.

770 / 24.8 / 1.5 (739)

Flights between 16k and 26k feet

174 / 5.6 / 0.3

Flights between 13k and 15k feet

125 / 4.0 / 0.2

Flights between 7k and 12k feet

153 / 4.9 / 0.3

Flights between 6k and 7k feet

12 / 0.4 / 0.0

Flights between 5k and 6k feet

122 / 3.9 / 0.2

Flights between 4k and 5k feet

433 / 14.0 / 0.8 (244)

Flights between 3k and 4k feet

805 / 26.0 / 1.5 (200)

Flights below 3k feet

820 / 26.5 / 1.6 (601)

4 or more flights per hour

338 / 10.9 (200)

9 or more flights per hour

75 / 2.4

Departures between 1.5k and 15k feet

1,360 / 43.9 / 2.6 (403)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

15 / 0.5

Between 1am and 2am

14 / 0.5

Between 2am and 3am

4 / 0.1

Between 3am and 4am

Between 4am and 5am

7 / 0.2

Between 5am and 6am

8 / 0.3

Between 6am and 7am

61 / 2.0

Between 7am and 8am

223 / 7.2

Between 8am and 9pm

3,003 / 96.9 / 6.9

Between 10pm and 11pm

25 / 0.8

Between 11pm and Midnight

28 / 0.9

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

23

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

27

Minimum avg. distance in miles

0.48

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

79.0 / 22.0 / 4.2 (68)

Flight holding stack identified?

No

Altitude for all flights

11,956 (17,495)

Altitude of departures between 1.5k and 15k feet

3,903 (8,584)

Altitude of flights below 20k feet

4,639 (8,882)

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

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

19.20

Tuesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:10 flight events.

19.10

Tuesdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:9 flight events.

18.80

Wednesdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

18.50

Thursdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:8 flight events.

17.70

Thursdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:8 flight events.

16.50

Tuesdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

16.30

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

15.90

Tuesdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

15.70

Thursdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

Our scorecard is designed to provide a greater understanding how the assessment was reached for your selected UK post code. To enable you to validate our assessment we also provide up to 10 occurrences when we believe the disruption will be at its highest.

For those that would like to perform their own analysis we can also provide the low level flight data that includes the length of time a plane existed inside your select airspace bubble.



Evidence by associated Airport – indicative only: CRONDALL-JUN-22

UK Airport Count of Flights Percentage of Total
MINOR UK AIRPORT?262076.8
TRANSATLANTIC FLIGHT?79323.2