Ok, I have the NGX but is it capable of WAAS/LPV approaches and are the databases we use (Navigraph or Aerosoft) contain those kind of approaches? Im so confsued by the different approaches; LPV RNAV GNSS GPS LOC ILS MLS NDB Back Course WAAS, its insane and Im trying to learn all about them. If someone had a list of approaches that the NGX could "legally" fly in the sim that be great!

Take Care

No it is not and the AIRACS don't have the data for them.  However, the NGX is capable of IAN approaches whcih provide a very similar function (within limits).  You can fly any approach that is listed in your AIRAC data source, plus IAN types.

 

DJ

IF you want to learn to fly 

  WAAS/LPV Approaches

 

Either get the Realty XP or the F1 G1000 aircraft like the Cessna 182 or the Mustang.

 

And here are some interesting links that may answer your Qs

 

http://williams.best.vwh.net/waas.pdf

 

 

http://www.askacfi.com/1585/differences-between-lnavvnav-and-lnav-minima-on-a-gps-instrument-approach.htm

 

http://garmin.blogs.com/my_weblog/2011/05/victors-vectors-lnavv-annunciations-on-your-garmin-navigator.html

 

http://www.duncanaviation.aero/videos/understanding_waaslpv/what_is_lpv.php

 

 

http://aviationmentor.blogspot.com/search/label/WAAS

Thanks guys! I have the RXP stuff and it's great. Why doesnt Aerosoft/Navigraph have WAAS/LPV data in there sets?

Ron,

 

LPV requires WAAS augmented GPS and an FMS/GPS configured to fly LPV approaches.  Best of my knowledge, Boeing/GE are not planning on a adding LPV/WAAS navigation capability to the FMS.  Airbus has spoke of doing so in the A350.

 

LPV, or localizer precision with vertical guidance, approaches use the same containment areas as an ILS approach from a design standpoint. For all intents and purposes, it's an ILS approach but one that doesn't use a ground-based localizer or glideslope signal.  Rather, the guidance is provided by the WAAS-augmented GPS for both lateral and vertical guidance.  Unless the FMS has the WAAS receiver and the capability for WAAS approaches, you will not be able to fly an LPV or LP approach.

 

Boeing and their airline partners have taken preference to RNP AR approaches instead of LPV since the accuracy of RNP 0.1 is approximately the same provided by LPV approaches.  The advantage of RNP AR is that it is not limited by the ILS procedure design limitations that are imposed on LPV approach.  It's also one less approach that the airlines must train their crew on.

 

Most RNAV (GPS) approaches in the US that have LPV minima also have LNAV/VNAV minima.  If the LNAV/VNAV minima are not suitable, then the airline would likely opt for the ILS approach or RNP AR approach. 

 

Equipage by US airlines for WAAS-approach and LPV capability will likely not happen.  Whether Boeing will offer an LPV option for BBJ operators remains to be seen.

 

Best regards,

 

Rich Boll