chflyer wrote:
Here is a recent article on FAA plans for backup of GPS in case of a general outage.
Indeed they are slashing VOR but keeping a minimal network for en-route above 5000ft agl and a safe landing within 100 nm
For approaches, US had traditionally ILS in big airports and radar coverage to allmost everywhere even smaller ones
Alaska & Hawaii is still no GPS+WAAS land
https://www.faa.gov/air_traffic/flight_info/aeronav/acf/media/Presentations/13-01_discontiuation_of_vor_services.pdf
13_01_discontiuation_of_vor_services_pdf
For glimpse on future alternatives of VOR !
By the time FAA-land does landings on Enhanced sensors Synt-Vis, HIAL in Scotland would be celebrating their first erected NDB antenna 
https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/documents/APNT/media/20120802APNTWhitePaperPL.pdf
20120802APNTWhitePaperPL_pdf
arj1 wrote:
Right, so ILS + VOR. Nice when the state picks up the bill…
Which is probably why HIAL is fitting NDB’s as they will be picking up the bill.
I wonder if we will see other airports in the UK take a similar what’s the most cost effective approach?
Bathman wrote:
I wonder if we will see other airports in the UK take a similar what’s the most cost effective approach?
LNAV approaches + NDB as a backup?
What can be cheaper than NDB?
If you just want to create the cheapest possible charade for an IAP, yes, an NDB and timed legs.
But first check the AOC ops who will be paying your landing fees have a GPS because only a crazy pilot will be flying it in less than OVC010 
Peter wrote:
If you just want to create the cheapest possible charade for an IAP, yes, an NDB and timed legs.But first check the AOC ops who will be paying your landing fees have a GPS because only a crazy pilot will be flying it in less than OVC010
@Peter, yes, that’s what I was saying – LNAV (or LNAV/VNAV) IAP as primary and NDB IAP as backup (flown once a decade?).
What is the GPS outage plan of the CAA for UK enroute navigation ?
Just NDBs ?
Jujupilote wrote:
What is the GPS outage plan of the CAA for UK enroute navigation ?
The en-route CAS bit managed by NATS where everything is positively radar vectored anyway (no procedural or legacy VOR airways navigation, on first contact you get vectors and climb FL250 even in C172s, you wonder if they ever read an FPLs but they may do one day if comms are lost or if you have “exam callsign”), the en-route OCAS bit bellow it is flown traditionally with a watch & paper map like the old days even in IMC but the Royal Navigation Society now has evolved and they ask pilots to avoid using “1:60 rule” for OCAS track corrections: it leads to airspace busts, instead they need to use “SCA (standard closing angle) rule”
Here is one presentation on the new hot topic,
https://slideplayer.com/slide/1508647/
For sure whatever backup CAA mandates for en-route navigation in UK, it’s not house of parliment who will pay for the bill
So no enroute VORs in the future ?
Well, they pay to maintain their radars, so they won’t pay to also maintain VORs just in case
NATS is planning on decomossioning most of their en-route VORs but they will keep all co-located DME/DME for airliners
UK VORs are now found,
1) in PPL syllabus for “basic instrument time” where one has to do VOR tracking (no GPS magenta line on CDI)
2) in ATPL books rather than in NAV boxes (e.g. Cranfield, Turnberry, Dean-Cross were decomissioned)
3) in N-reg techlog every 1 month with a pilot signature
For the 1st not sure how this will work for local schools with no VOR around and no GPS in the pannel?
A TSO146 navigator (any of the new WAAS boxes) does not need the FAA 30-day VOR check
