Fed: Planes flying in "commercial" airspace must get GPS

Your conveyance of information through written text being somewhat
sub-optimal, I’m trying to work through what you are trying to say. If the
meaning of your contribution is that on-board radar systems would perform to
a higher standard, with regard to air traffic control concerns, than the
proposed NextGen/ADS-B, based on satellite localization, then I
wholeheartedly disagree.



In article ,
says...


I read and assimilated the part where VOR-DME used the classical fallacy of
appeal to authority:

"... if you believe someone with your limited understanding of the system
is going to dream up failure modes that the NextGen developers, in their
haste, have not worked out to the tenth decimal place..."

It is an assertion of competence on the part of the FAA that also happens
to be historically inaccurate.

The only legitimate goal that the FAA can reasonably seek by its rules,
separation of commercial aircraft from all other airborne objects
(including birds), could also be accomplished by requiring on-board radar
and alert systems for those aircraft. This is a technical alternative to
ADS-B that accomplishes that goal. It also manages to equitably match the
burden with the benefit. It also permits non-commercial GA the freedom to
choose their level of risk versus cost.
The ADS-B out mandate doesn't accomplish either of the above.