I fully understand what this restriction means (e.g., unsuitable/unavailable DME facilities). Lateral sensitivity increases as the aircraft gets closer to the runway (or point in space for helicopters). Barometric Vertical Navigation (Baro-VNAV). Like an ILS, an LPV has vertical guidance and is flown to a Decision Altitude (DA). Pilots may use a WAAS-enabled GPS for LNAV, but WAAS is not mandatory. LP is the GPS equivalent of a localizer approach. Then the title would read âRNP AR.â Pilots are now benefiting from the proliferation of Area Navigation (RNAV) Global Positioning System (GPS) approaches and lower minimums provided by WAAS-enabled systems. The advisory glideslope information is nothing more than an alternate means of descending from the intermediate segment altitude to the MDA. LPV approaches are a WAAS/GPS based approach, and they're very similar to the ILS. Sorting out the various RNAV approaches can be difficult. LP (Localizer Performance) — Nonprecision WAAS-mandatory approach. Barometric aiding, aka baro-aiding, is an integrity augmentation that allows a GPS system to use a nonsatellite input source (e.g., pitot-static system) to provide vertical reference. Has Pornography Taught Us All to Live Track Up? See this FAA FAQ on GBAS. Some RNAV units use DME cross referencing (DME/DME) to achieve RNP 0.3. Baro-aiding satisfies the RAIM requirement in lieu of a fifth satellite. Please refer to current FARs to ensure you are legal. The other reference you will see on this RNAV chart is the Visual Descent Point (VDP), at 1.1NM RWY05R, which is at the Minimum Descent Altitude (MDA).. The first RNAV (GPS) approach that includes a RF leg will be published this month at KCRQ RNAV Y eff 26 JUL, but it wonât be able to be flown. The Final Approach Fix (FAF) is a special waypoint in an RNAV approach and the aircraft must approach the final approach track 2 NM before the FAF, with an intercept angle of not more than 45°, and an XTE less than 1.6 NM; 3. The minimums on the approach chart will provide the DA or MDA and the required visibility. (Baro-VNAV is still a valid means of flying an LNAV/VNAV approach but may be subject to temperature and other limitations mentioned in the approach notes.) All IFR-certified GPS units meet 0.3 RNP. The pilot will understand how each of these different approaches must be flown. Requires a WAAS receiver in the airplane and can have minimums as low as 200 feet agl and half-mile visibility with proper approach and runway lighting. Baro-VNAV is an RNAV system which uses barometric altitude information from the aircraft’s altimeter to compute vertical guidance for the pilot. Post by 55+ » Sat May 28, 2011 11:15 pm Borid is an IF(intermediate Fix) which is accociated with a conventional aka ILS/DME IAP.NC is mixing conventional and RNAV(GNSS). Barometric vertical navigation, aka baro-VNAV — Uses approach-certified barometric altitude info from the pitot-static system and air data computer to compute vertical guidance (large aircraft). Altitudes for each segment of the approach, for any stepdowns, and for the minimum altitude are dictated by the barometric altimeter. *ATIS Apt Elev 127.0 4395' Alt Set: hPa Trans level: FL150 Trans alt: 13500' 1. We have come a long way. When using TSO-C145 and TSO-C146 (WAAS) equipment at an alternate airport, planning must be based on flying the LNAV or circling minimum line, or GPS procedure, or conventional procedure with "or GPS" in the title. +11 Votes 13 Votes 2 Votes. Random refered, at the time of early air navigation, to a nav aid that was not repersented by an antenna of some sort on the ground.