Dear Civil Aviation Authority,

I note that the FAS Newsletter included the item

http://futureairspace.aero/wp-content/up...

VOR Rationalisation
In 2008 there was widespread consultation to reduce the number of VOR ground based navigation beacons from 46 to 19.

As a result of the postponement of the airspace change to facilitate that rationalisation an interim solution now needs to be introduced to cover the period 2019 to 2025.

As a result NATS has developed a generic set of safety measures to enable coded overlays of routes in lieu of the DVOR information. Provided there is no change to the routes over the ground there will be no need for a separate airspace change proposal.

and the minutes of the FAS Policy and Regulatory Programme Board (PRPB)

https://www.whatdotheyknow.com/request/4...

included
Interim DVOR Overlay Policy – The policy will be consulted on through a NATMAC
consultation. Airports must develop their mitigation strategies to ensure there are no un- intended consequences.
NATMAC consultation to focus on the question of the content of a draft AIC and does it provide sufficient guidance; not a consultation on DVOR rationalisation.

Under the Environmental Information Regulations, please can you provide information held by CAA on

1. The membership bodies that are included in ANMAC who have been invited to participate in this consultation.

2. The document that was issued for this consultation

3. If not included in 2, information on the definition of what "no change to the routes over the ground" is taken to mean if the use of an interim overlay may result in environmental change from a narrow concentration of flights instead of a previously dispersed distribution and/or variation in flight altitude.

Yours faithfully,

T J Henderson

Dear FOI Requests,

Can I correct my request 1
"1. The membership bodies that are included in ANMAC who have been invited to participate in this consultation."

I did, of course, mean
"1. The membership bodies that are included in NATMAC who have been invited to participate in this consultation."

Yours sincerely,

T Henderson

Dear FOI Requests,

I have recently found that the membership of NATMAC is shown in Annex 1 of Appendix C of CAP 724 "Airspace Charter" although the CAA webpage at https://publicapps.caa.co.uk/modalapplic... notes that the August 2012 Issue 4 of this is currently under review.

Annex 1 Membership of NATMAC
Civilian
AOA Airport Operators Association
AOPA Aircraft Owners and Pilots Association
BA British Airways
BAA BAA plc
BALPA British Airline Pilots Association
BATA British Air Transport Association
BBAC British Balloon and Airship Club
BGA British Gliding Association
BHA British Helicopter Advisory Association
BHPA British Hang Gliding and Paragliding Association
BMAA British Microlight Aircraft Association
BPA British Parachute Association
GAPAN Guild of Air Pilots and Air Navigators
GASCo General Aviation Safety Council
GATCO Guild of Air Traffic Control Officers
- Heavy Airlines
HCGB Helicopter Club of Great Britain
- Light Airlines
- Low-Cost Airlines
NATS (NERL) NATS (Formally National Air Traffic Services Ltd.)
NATS (NSL)
LAA Light Aircraft Association
PPL/IR
SRG (CAA) Safety Regulation Group, CAA
UAVS Unmanned Aerial Vehicle Systems Association
UKAB United Kingdom Airprox Board
UKFSC United Kingdom Flight Safety Committee

Military
DAAvn Director Army Aviation
MoD Military Aviation Authority
MoD Defence Airspace Group
MoD (DE&S) Ministry of Defence (Defence Equipment and Support)
USAFE (3rd AF-DOF) United States Air Force Europe (3rd Air Force-Directorate of Flying)
ICAO
UK Representative Council of ICAO

Accordingly, if this membership list is still valid, it is not necessary to provide the information requested in the first part of my request as it seems reasonable to assume that the consultation would have been extended to all the members of NATMAC. I look forward to receiving your response to the other parts of the request.

Yours sincerely,

T Henderson