Originally Posted by
peekay4
These procedures are essentially coded visual approaches and therefore do not have FAFs per se, as they are not considered to be Instrument Approach Procedures. They can only be flown when there's adequate ceiling and visibility for visual approaches.
I.e., one can obviously fly the underlying visual approach without any special equipment other than mk1 eyeballs.. Hence the use of even DME/DME/IRU is acceptable as long as there's adequate DME infrastructure nearby. Otherwise the procedure will be marked "GPS only".
Nonetheless these FMS RVFPs are designed and "flight inspected" by the lead carrier. Airlines don't have the extremely sophisticated equipment that an FAA flight inspection airplane contains.
Seems to me there should be DME screening, such as the FAA does with RNAV-1 SIDs that permit D/D/IRU in lieu of GPS: