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onewithwings

Well-known member
Joined
Jun 3, 2006
Posts
776
The second carrier (the only regional) to be approved for RNP in the U.S.
(Second to AS...aka their big brother!)
 
...

Rnp ?
 
onewithwings said:
The second carrier (the only regional) to be approved for RNP in the U.S.
(Second to AS...aka their big brother!)


...and if anyone else in the world had a use for it they would all have it to.
 
I'm trying to find a site to help explain what RNP exactly is and am having no luck. Any suggestions?
 
It relates to RNAV, and how preciese the approaches can be. Like someone said previously, if any other airline had a use for it, they'd have it too.
 
DoinTime said:
...and if anyone else in the world had a use for it they would all have it to.

Yeah cuz Horizon is the only carrier that goes into Sun Valley!
 
Do those courses show up as arcs (not straight) on your nav displays as well?

The Saab is like RNP 45.0 :D
 
Just one more thing they can bust your ballz over next time you roll through Recurrent...
 
I don't see what the big deal is, my Part 91 flight department is RNP, MNPS, etc... All you need is an LOA from the FAA.
 
Jeez...I didn't realize Horizon did PANOPS and NATOPS. Have fun "on the tracks" boys. Cheers!
 
Wow. Lots of negativity out there.

For those of you who don't know, and apparently a lot don't care, but I'll tell you anyway. RNP allows an aircraft to, in effect, fly a non-straight precision approach. The couse can change several times, all the while you are flying a glideslope. In some places, like DCA, it allows aircraft a more precise path around restricted airspace. In other places, like PSP, it allows significantly lower minimums due to high curving terrain that otherwise would prevent a precision approach.

It may not be that great to you corporate people, but in the slow moving world of airlines, where a lot of people die when we crash, this is a big deal.:smash:
 
RNP is important

[FONT=Arial,Bold]
'Public' RNP Approaches Could Benefit Many Airlines
Once the FAA Approves Them​
[/FONT]
Aviation Week & Space Technology
06/13/2005, page 172
David Hughes
Amsterdam and Washington​
[FONT=Arial,Bold]
'Public' RNP approaches could benefit many airlines once the FAA decides how to approve them​
[/FONT]
Will RNP Proliferate?
Broad government-industry support is mounting to roll out many more Required Navigation
Performance approaches in the U.S., but don't expect this to happen overnight.
RNP's accuracy and integrity monitoring provide even more precision than conventional area navigation
(RNAV) procedures. But the two are quite similar in that both free an aircraft from having to fly over a
series of ground-based navigation aids.
Alaska Airlines pioneered RNP at Juneau International Airport nearly a decade ago, and it now has
dozens of approaches and departures in use statewide. These procedures--developed by Alaska and
certified by the FAA--exploit advanced avionics on the carrier's Boeing 737-400s, -700s, -800s and -
900s, and require special crew training. They help the airline serve "terrain-challenged" airports in
remote areas where there's little, if any, navaid infrastructure.​
[FONT=Arial,Italic]
This RNP RNAV Runway 23 approach procedure developed by Naverus provides precision guidance into Queenstown, New
Zealand, with a 250-ft. decision altitude, despite high terrain surrounding the airport. Credit: NAVERUS INC.​
[/FONT]
 
There are RNP Approach procedures and RNP STARS/SIDS. Very few carriers have authorization to use RNP Approaches. RNP STARS are in use at KATL, KDFW and KDCA. The list of carriers authorized to use them is growing rapidly. Potomac Approach told me the majority of carriers file them now. Almost all aircraft with at least a single FMS and enroute certified GPS meet the aircraft reuirements for RNP 2.0 and can be authorized for them. The AC and training requirements for RNP 0.5 approaches are more involved.
 
Sorry, I didn't realize that most airlines could not use RNP DPs and STARS. I thought everybody was doing it.
 
sleepy said:
I don't see what the big deal is, my Part 91 flight department is RNP, MNPS, etc... All you need is an LOA from the FAA.

You guys get all the neat stuff. To outfit a few airplanes is expensive, but it pales in comparison to the cost of outfiting several hundred airplanes that an airline would have to. That's why there are C172s flying around with more advanced equipment than my "state of the art" RJ.
 
okay there is a difference between RNP and RNAV.
The big difference is RNAV is a public approach, Joe Blow in his 172 with gps can do the approach. RNP is a special thing only approved for the certain operators. At AK we built and developed our RNP approaches in house, and we are the only ones that can use them.
RNAV only requires a RNP value of .3 for approaches (.3 miles from the centerline of the track). At AK we have RNP approaches that go to an RNP value of .15. We have a big list of stuff that we need to shot an approach that low (ie. autopilot, 2 gps, approved training, the required amount of overhead satellites).

Not only do we use them for approaches we also have deperatures that have an RNP value of .19
 
sf340flyer said:
okay there is a difference between RNP and RNAV.
The big difference is RNAV is a public approach, Joe Blow in his 172 with gps can do the approach. RNP is a special thing only approved for the certain operators. At AK we built and developed our RNP approaches in house, and we are the only ones that can use them.
RNAV only requires a RNP value of .3 for approaches (.3 miles from the centerline of the track). At AK we have RNP approaches that go to an RNP value of .15. We have a big list of stuff that we need to shot an approach that low (ie. autopilot, 2 gps, approved training, the required amount of overhead satellites).

Not only do we use them for approaches we also have deperatures that have an RNP value of .19


What's a deperature?
 

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