"Sam Spade" wrote in message
news:zdjbg.177236$bm6.114258@fed1read04...

No such regulation is required.


Wrong. That is exactly what is required.



The FAA has made it clear through policy, directives, and avionics
specifications. There are also ICAO international navigation policies.


All of which are nonregulatory.



You may poo poo all that, but in an enforcement proceeding the FAA would
win, hands down with what they have today.


Nonsense. Without a regulation there is nothing to be enforced. You simply
do not know what you're talking about.