Sounds like a serious problem,
keithl, unless of course you're using a route where there are airports, with declared MSAs, every 25 miles. I guess that I can understand the UK CAA withdrawing the original reference source (eg if there was an error or two in it, or maybe it didn't comply with ICAO specifications), but I can't understand why they haven't issued a replacement reference.
Well spotted
blackmail! I was confusing that idiotic MORA term with the American MEA expression. Thanks for that.
Touche
ftrplt. Time was when navaids were U/S because maintenance wasn't being done. These days, we can't get through 2 consecutive maintenance cycles due to sabotage and/or removal of the solar power equipment. We can't win and we can't afford to keep replacing navaids and equipment because they'll just be stolen/sabotaged again.
However, the situation I'd been thinking about with my comments was the typical AYPY-AYNZ route, where there are working VOR, DME and NDB facilities at each end.