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

12/08/2025 09:22:16

UK Postcode

EXETER-CENTRE-3M-1108 , DEVON , EX1 1UG

Baseline geo-coordinates

50.7217 , -3.52622

Survey type

31 days prior to: 12-Aug-2025 @00:26:07

Assessment band

INTERMITTENT

Assessment actual value

5.85

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,405 / 77.6 / 4.6 ✔

Flights above 26k feet.

1,641 / 52.9 / 3.1 ❌ (760)

Flights between 16k and 26k feet

340 / 11.0 / 0.6 ✔

Flights between 13k and 15k feet

86 / 2.8 / 0.2 ✔

Flights between 7k and 12k feet

17 / 0.5 / 0.0 ✔

Flights between 6k and 7k feet

3 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

1 / 0.0 / 0.0 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

44 / 1.4 / 0.1 ✔

Flights below 3k feet

267 / 8.6 / 0.5 ✔

4 or more flights per hour

39 / 1.3 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

277 / 8.9 / 0.5 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

60 / 1.9

Between 1am and 2am

24 / 0.8

Between 2am and 3am

9 / 0.3

Between 3am and 4am

3 / 0.1

Between 4am and 5am

5 / 0.2

Between 5am and 6am

23 / 0.7

Between 6am and 7am

82 / 2.6

Between 7am and 8am

78 / 2.5

Between 8am and 9pm

1,877 / 60.5 / 4.3

Between 10pm and 11pm

124 / 4.0

Between 11pm and Midnight

97 / 3.1

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

38 ❌ (30)

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

35 ✔

Minimum avg. distance in miles

2.00

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

11.0 / 4.0 / 0.6 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

28,034 ✔

Altitude of departures between 1.5k and 15k feet

2,525 ❌ (8,431)

Altitude of flights below 20k feet

8,710 ❌ (8,790)

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

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

5.50

Saturdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.75

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

6.50

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

5.50

Fridays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.50

Mondays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

6.83

Saturdays between 15:00 and 16:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

6.00

Wednesdays between 12:00 and 13:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

5.67

Sundays between 14:00 and 15:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

5.33

Wednesdays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.