![]() ![]() Our pages contain various quotes with which our editorial team does not always agree. and/or autopilot in the lateral navigation (LNAV) mode If using barometric-VNAV the flight crew must confirm the current, local altimeter setting If using multi-sensor systems the flight crew must confirm GNSS is available & being used by the navigation system. See also: Fixed wing, Part 121, Ground resonance, Normal operating zone, Amphibious floats LNAV Lateral Navigation (provides computer description of aircraft's planned lateral flight path that can be tracked by the auto flight system lateral path can be shown on map display.) The specified load is expressed in terms of any of the following: aero dynamic forces, inertial forces, or ground or water reactions. The ratio of a specified load to the total weight of the aircraft. Since electronic vertical guidance is provided, the approach minimum altitude will be published as a decision altitude (DA).LMM is a FAA Acronym for: Locator Middle MarkerĬlick to share on Twitter (Opens in new window)Ĭlick to share on Facebook (Opens in new window)Ĭlick to share on Google+ (Opens in new window). WAAS equipment may revert to this mode of operation when the signal does not support “precision” or LPV integrity. Aircraft using LNAV/VNAV minimums will descend to landing via an internally generated descent path based on satellite or other approach approved VNAV systems. This includes Class 2, 3 and 4 TSO-C146 WAAS equipment. These minimums can be flown by aircraft with a statement in the Aircraft Flight Manual (AFM) that the installed equipment supports GPS approaches and has an approach-approved barometric VNAV, or if the aircraft has been demonstrated to support LNAV/VNAV approaches. LNAV stands for Lateral Navigation VNAV stands for Vertical Navigation. Definition Localiser Performance with Vertical Guidance (LPV) is defined as an Approach with Vertical Guidance (APV) that is, an instrument approach based. Identifies APV minimums developed to accommodate an RNAV IAP with vertical guidance, usually provided by approach certified Baro-VNAV, but with lateral and vertical integrity limits larger than a precision approach or LPV. It uses GPS and/or WAAS for lateral navigation, but with no vertical guidance. Source: FAA Advanced Avionics Handbook (FAA-H-8083-6) What are LNAV/VNAV, LPV and LP approaches LNAV is a non-precision approach. It gives the aircraft the ability to determine its position with both accuracy and integrity. Procedure minimums altitude is published as DA (decision altitude). In the context of the ICAO Performance Based Navigation (PBN) concept, required navigation performance (RNP) is a family of navigation specifications which allow aircraft to operate along a precise flight path. Lateral navigation/vertical navigation minimums provided for RNAV systems that include both lateral and vertical navigation (e.g., WAAS avionics approved for LNAV/VNAV, certified barometric VNAV with IFR approach certified GPS). You'll love them with their polished learning environments and world's best and clearest content (please do give them a try.). Our FAA written test prep and FAA practical test prep software and apps. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies This glossary is built from a combination of official, quasi-official,Īnd proprietary sources (including original material that we develop oursselves). begingroup Lnafziger, if a smaller plane is equipped with a WAAS GPS, then yes, they could fly the LNAV/VNAV approach as well, but generally, a WAAS GPS would qualify them to also fly an LPV which provides a lower minimum and would be the likely choice as a preferred approach. Welcome to the Dauntless Aviation Glossary!Īt Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. ![]()
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