GPS approach safety case

"John R. Copeland" wrote in message
...

Interesting, if that A1 need is indeed the case.
Approach capability seems an odd requirement in equipment mandated only
for high-altitude flight.
But logic shouldn't be applied recklessly to regulations, should it?

Reveiwing some historical material, I think I'm mistaken. B-RNAV mandated
health-word checking and pseudorange step detection which caused some grief
against US standards, but I believe that was about the difference between
C129 and C129a.

Julian Scarfe