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LPV requirements |
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compasst 
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Joined: 22 Feb 2015 Location: Akron, OH Status: Offline Points: 169 |
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 Topic: LPV requirementsPosted: 18 May 2015 at 10:43am |
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I'm enjoying using my well-designed IFD 540. Thank you Avidyne.
I recently found references on the web, most leading to Duncan Aviation, claiming that dual WASS GPS certified installation is required for LPV approaches. Is this an FAA requirement or simply somebody's recommendation? |
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oskrypuch
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Joined: 09 Nov 2012 Location: CYFD Status: Offline Points: 3058 |
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Posted: 18 May 2015 at 10:51am |
Definitely FALSE. * Orest Edited by oskrypuch - 18 May 2015 at 10:52am |
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bneub111
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Joined: 16 Feb 2015 Status: Offline Points: 33 |
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Posted: 18 May 2015 at 1:34pm |
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My single 540 install will do LPV.
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tony
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Joined: 06 Dec 2011 Location: Atlanta Status: Offline Points: 466 |
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Posted: 18 May 2015 at 3:59pm |
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you probably will need a dual solution for an RNP approach, not a RNAV (GPS) approach.
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oskrypuch
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Posted: 18 May 2015 at 6:56pm |
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I don't think that an IFD540 could provide you with legal guidance for an RNP approach, no matter how many you have.
* Orest |
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mkellock
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Posted: 18 May 2015 at 7:42pm |
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Well, I've now spent the last hour learning about RNP... ;-)
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Piper Archer II
PA28-181 Tampa, FL |
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oskrypuch
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Posted: 18 May 2015 at 8:35pm |
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RNP was created because of a "me too" interest of the air carriers, to fly all the cool new GPS approaches that started appearing in the late 90's.
They didn't have GPS on board, for the most part, but did have RNav capability. So required navigation performance (RNP) was created. In this construct, as long as you could locate yourself to sufficient accuracy, no matter how, you could fly the approach.
* Orest Edited by oskrypuch - 18 May 2015 at 8:36pm |
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tony
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Posted: 18 May 2015 at 8:39pm |
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RNP- required navigation performance. Its get a bit complicated but you need a multi-sensor FMS that has an architecture where you can show mathematically that you the availability of a Nav accuracy. If you look in DO-236, it gives you the math. There are not many RNP approaches but its part of next gen and time nav. Large congested airports will benefit from RNP in the future.
Edited by tony - 18 May 2015 at 8:43pm |
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compasst wrote: