90 extra flights per day is assumed to mean 90 Departures. 90 Departures implies 90 additional Arrivals. 90 Arrivals equates to 540 flight Arrival flight events due to stacking and zigzagging through UK airspace prior to landing.
Assuming 50% the 90 extra flights are destined for UK airports this equates another 315 Departure and Arrival flight events.
In total 90 extra flights equates to 945 flight events per day with each flight event being associated with airspace noise and emissions.
The number of persons benefiting from the 90 fights will be approximately 18k. Based on current legislation the number of UK citizens impacted by increased noise and emissions will be 30+ million per everyday, 7 days a week.
The UK airspace is lawless in terms of noise and emissions as there are no legal controls or penalties in this area*.
(please use the twitter account @RichardHerson to comment on this article)
* As stated by the UK CAA. I.e. Aircraft noise is not currently a statutory nuisance in the UK. It is not covered by the Environmental Protection Act 1990 or the Noise Act 1996. This means that local authorities do not have the legal power to take action on matters of aircraft noise, and nor does the CAA have the legal power to prevent aircraft flying over a particular location or at a particular time for environmental reasons.
This article explains how to make sense of the information contained within the Aircraft Traffic Assessment Scorecard, both for the Full and 31 Day assessments.
Date of Survey
For the 31 Day Scorecard the date represents the end date and time for the survey. The start date and time is calculated 31 days earlier.
Whereas for the Full Scorecard the date represents when the survey was requested and is for information only.
Is the identifier for the location being surveyed.
The geo-coordinates, Lat & Long, are used to define the centre of the 1 mile Assessment airspace bubble. Typically this is the actual location of the point-of-interest.
Describes the type of assessment survey being reported. The full survey analyses 93 days of flight events based on 2019. The 31 Day survey uses the actual survey date, see above.
Assessment disruption band
The Assessment band category e.g. FREQUENT, OCCASIONAL, VERY HIGH etc. This is an important measure.
Assessment disruption value
The actual Assessment value. Useful for gaining an understanding where the location sits within the disruption band i.e. bottom, middle or top. This is an important measure.
A description that attempts to relate the Assessment to an equivalent road noise.
Shows the lower and upper levels for the Assessment band. Designed to be used in conjunction with the Assessment disruption value. This is important data.
Flight holding stack identified?
If a fight holding stack is identified the returned value is ‘YES’. Meaning planes will be held in a holding loop at between 7,000-12,000 feet. Multiple planes can exist in the stack at the same time and the planes are in “fly” mode i.e. not gliding.
Count of ALL flights
The total number of all flights that occurred within the Assessment airspace irrespective of the altitude. Flights above 35,000 feet will have little impact.
Flights above 26,000 feet
The total number of flights that occurred above 26,000 feet within the Assessment airspace. Flights between 26,000 and 35,000 feet can be heard from the ground. Flights at this height are someway from the destination airport.
Flights between 16,000 and 26,000 feet
The total number of flights that occurred between 16,000 and 26,000 feet within the assessment period. Flights at this height implies the area is being overflown and the airspace is being used by 1 or more airports.
Flights between 13,000 and 16,000 feet
As above but between 13,000 and 16,000 feet. However, the planes will be clearly heard from the ground and will be clearly visible.
Flights between 7,000 and 12,000 feet
As above but between 7,000 and 12,000 feet. This is the height that most planes are held within holding stacks prior to landing.
Flights between 6,000 and 7,000 feet
The total number of flights that occurred between 6,000 and 7,000 feet. Planes leave their holding position at this height ready for final descent.
Flights between 5,000 and 6,000 feet Flights between 4,000 and 5,000 feet Flights between 3,000 and 4,000 feet
The total number of flights that occurred between 6,000 and 3,000 feet. At this height it implies the planes have recently departed or are about to land. Both scenarios will be relatively noisy.
Flights below 3,000 feet
See above but very visual too.
4 or more flights per hour
The count of occurrences where 4 or more flights occurred within a single 60 minute period. For a flight to qualify it has to be below 26,000 feet. 4 flights within 60 minutes averages a flight every 15 minutes which gives the impression of a continuous background noise/rumble.
9 or more flights per hour
The count of occurrences where 9 or more flights occurred within a single 60 minute period. For a flight to qualify it has to be below 26,000 feet. 9 flights within 60 minutes averages a flight every 7 minutes which gives the impression of a continuous background noise/rumble.
Departures between 1,500 and 15,000 feet
The total number of departures between 1,500 and 15,000 feet within the assessment period. Departures tend to be noisier than Arrivals.
Hours between 0:00 AM and 7:59 AM
The 2 values shown represent; 1) count of aircraft movements that occurred within a one hour period for the duration of the Assessment [93 days for the Full Assessment and 31 for the Latest Assessment], and 2) the average occurrences per day per hourly period.
Planes below 26,000 feet occurring these times are very likely to disturb sleep patterns.
Hours between 8:00 AM and 9:59 PM
As above but also includes a 3rd value that represents the average count per hour within the 14 hour period (8:00am – 10:00pm)
Hours between 10:00 PM and 11:59 PM
As above. Planes below 26,000 feet occurring these times are very likely to disturb sleep patterns.
Time in seconds an aircraft existed in the Airspace Bubble
The average time in seconds it takes for a flight to travel through your airspace bubble which as a radius of 1 mile. The longer the period the greater will be the level of disruption.
Altitude for all flights
The average altitude for all flights passing through the area.
Altitude of departures between 1,500 and 15,000 feet
The average altitude forDepartingflights that are between 1,500 and 15,000 feet.
Altitude of flights below 20,000 feet
The average altitude for all flights passing through the area that are below 20,000 feet.
Each of us live inside our own personal Airspace bubble but how do we know what’s going on in that bubble and whether or not that activity could disturb the quality of our lives?
In the context of this article an Airspace bubble is a 1 mile radius from a specified point such as our home, holiday location or outdoor leisure space.
This article focuses on the impact and assessment of commercial Aircraft within our personal Airspace bubbles. Firstly, we need to understand the terms such as impact and assessment before interpreting any results. Our Assessment ignores all aircraft above 26,000 feet as above this height the noise, and possible pollution, is less likely to disturb our lives. Likewise, we also ignore aircraft that share our bubble for less that 7.5 seconds as it implies any noise would not be around long enough to create a significant disturbance.
Experience has told us that real disruption is not caused by individual aircraft operating within our Airspace bubble but it’s actually the repetitive nature of multiple aircraft at regular times that has the biggest impact.
To summarise our assessment of disturbance is based on all flights that regularly share our Airspace at the same time for periods greater than 7.5 seconds and are below 26,000 feet. Therefore, our assessment could say for a location; “between 8pm and 11pm on a Friday, Saturday and Sunday there is an 80% chance you willhear and/or see aircraft within a 10-15 minute period. The disturbance classification for this location, across all time periods, is: Frequent“.
Having an understanding of the facts you can now make a personally decision about whether this situation meets your life style criteria.
We all have the right to know and to make informed decisions.