rightseater

In the notes section of some RNAV departure and arrivals it states RNAV 1...Does anyone know what this means? Or have a good source on where I can find more information about this. I have a list of things I've been told it means, but I can't find a good source to back it up. Thanks!

250 or point 65

are you talking like when the procedure is named the BARIN ONE RNAV ARRIVAL? what the one means. if not throw us an example

ZapBrannigan

RNAV 1 requires a total system error of not more than 1 NM for 95% of the total flight time.

AC90-100A dated March 1, 2007

__________________
Save Money. Live Better.

rightseater

Thats part of the requirement I've found...the part in question is if flying an RNAV 1 departure or arrival and your flight director fails, can you continue to fly the arrival raw data? or must you advise ATC that you can no longer do the RNAV 1? My interpretation is that you cannot fly these raw data...anyone dissagree?

rightseater

No, not the one in the name, however this is an example of an RNAV 1. If you look in the notes, it will say "RNAV 1"

atlmsl

RNAV 1 is related to the RNP requirement of your RNAV equipment. That's the 1nm 95% of the time as mentioned above. It's just the reliability of your equipment. As far as losing your flight director, how do you all read this from the AIM?

For RNAV 1 DPs and STARs, pilots must use a CDI, flight director and/or autopilot, in lateral navigation mode. Other methods providing an equivalent level of performance may also be acceptable.

Does this mean you need a CDI AND FD and then the autopilot is optional. Or do you just need one of the three?

HangOn

AKA RNP 1.0

DSflyer05

As already stated it refers to RNP. In this case RNP 1.0. With requards to STARS the GPS must keep 1 mile tollarances out to 30nm from the airport or the first enroute fix. You do have the ability to moniter the deviation in the airplane. For GPS approaches it requires RNP 0.3. I have never seen anymore than 0.1nm deviation and thats enroute whan 2.0nm is allowed.

HangOn

RAIM Holes will generate ANPs in excess of 0.3 nm.

rightseater

AC 90-100A page 13, has a sentence that says "Pilots must use a lateral deviation indicator (or equivalent navigation map display), flight director and/or autopilot in lateral navigation mode on RNAV 1 routes."

So my original question still stands, does this mean if you are flying a non autopilot equipped airplane, and the flight director fails, you would have to advise ATC and get a switch to a different arrival/departure?