Originally Posted by
CLT Guy
I don't know exactly what the question asks, but here is what I found that might help. I got this info from the ground school and systems manuals. Are they asking about RAIM or RNP?
RNP
4.0NM - Oceanic
2.0NM - Enroute
1.0NM - Terminal (initial, intermediate, and missed segments)
0.3NM - Approach (final segment)
and you must be within this 95% of the time.
I think this is as close I will get to what may be a correct answer. I remember the RAIM or GPS needs to be accurate to 0.3NM at the FAWP, and that the interrogation is continuous. I also pulled up AC 90-100A which states, as CLT Guy mentioned above that RNAV requires a total system error of not mor than 1NM for 95% of the flight time.
Not sure why they're asking this question either, but, rather be safe than sorry, every question missed is worth 4% for that 80% passing score.