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Old 17th December 2014 | 20:24
  #81 (permalink)  
beech35
 
Joined: Jul 2013
Posts: 7
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From: Charlotte, NC
I believe the FAA is still committed to decommission the vast majority of VORs by 2020. A huge number of existing ILS procedures must be revised as a result. I wouldn't be surprised if many of the ILS procedures will be retired along with the VORs.
I have sat thru at least four of the MON presentations, the most recent one was this October. They do not plan to eliminate the vast majority of VOR's, at best it will be less than 50% and the Western third of the country, Alaska, and Hawaii will be untouched. There are also several VOR systems that will remain in place because of international agreements. I have asked the question regarding ILS and these systems are not in the plan for removal, but there are changes going to be needed to support them, including using GPS for joining the ILS and installing DME to replace fixes that were once done using locators and VOR radials. A good example is my airport. The ILS was split into two procedures, one which requires GPS and the other which requires DME. The DME is newly installed. See ILS or LOC Y RWY 2 and the Z variation at KUZA.

As part of the MON, the FAA will provide at least one "safe" ILS procedure without any dependency on DME, GPS, or Radar wihtin 100 NM of any place in the NAS where the MON is removing VOR's.

Finally, removing VOR's is going to be a long process and undoubtedly get very political before it is over. Loss of ground based Navaids for approaches will generate a lot of squealing.
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