What is the difference between LNAV/VNAV and LPV minimums …
$\begingroup$ @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. If there is not an LPV available then and LNAV/VNAV could be flown.
faa regulations - Why are some LNAV/VNAV mins lower than the …
Jan 2, 2017 · $\begingroup$ That article addresses why the LPV is generally LOWER than LNAV/VNAV, without discussing a case as asked here where the reverse is true. That atricle is answering the question how an LNAV minimum can be lower than an LNAV/VNAV minimum to the same runway, which it does, although it also brings in LPV as being generally the best ...
What are the lateral sensitivities of GPS approaches?
Sep 14, 2017 · AIM 1-1-18 (d) 4 Both lateral and vertical scaling for the LNAV/VNAV and LPV approach procedures are different than the linear scaling of basic GPS. When the complete published procedure is flown, ±1 NM linear scaling is provided until two (2) NM prior to the FAF, where the sensitivity increases to be similar to the angular scaling of an ILS.
faa regulations - Is LPV considered a precision approach?
Jun 17, 2014 · WAAS LPV approaches can have decision altitudes as low as 200 AGL, the same as many Cat I ILS approaches. Previous opinions on the Internet have quoted the FAA as saying LPV is considered a non-precision approach, but many of these entries were made more than seven years ago, when the technology was much less mature.
How do I know if I'm able to use LPV minimums on a GPS approach?
Even when the plane is equipped to fly LPV approaches, there can be certain conditions when you can't use LPV minimums (satellites, etc.) If you CAN use LPV minimums, the GPS unit MUST show you "LPV" in the annunciator window. It's possible that you're LPV-equipped, but your annunciator window shows you only "LNAV", for example.
Can I fly the LNAV MDA when the GPS is set up for LPV?
Aug 24, 2020 · GPS approaches are designed for you to fall back to LNAV if a 'higher' precision option like LPV fails during the approach. Just like going from ILS to localizer only if the glideslope fails. The Instrument Procedure Handbook p. 4-26 says: Flying a WAAS LPV approach requires an aircraft with WAAS-LPV avionics.
Is baro-VNAV the only possible source of vertical guidance on …
Apr 6, 2022 · I believe @busdriver may have overlooked something. Your TSO 145 or 146 avionics will "fail down" from LPV (a more constrained lateral and lower minima approach) to LNAV/VNAV (wider horizontal guidance through final - higher vertical minima) if WAAS accuracy is degraded, so yes, you can fly LNAV/VNAV to a DA with an SBAS GPS even if not baro-aided.
What is the difference between IAN and LNAV/VNAV?
Sep 17, 2020 · Although non-ILS approaches using LNAV and VNAV can still be performed, IAN is normally used in place of LNAV and VNAV because of improved approach displays, alerts and standardized procedures. (Boeing 737 NG FCTM 5.60 - Approach and Missed Approach, emphasis mine)
In what situations can LNAV/VNAV minima be higher than LNAV …
Oct 31, 2023 · While reviewing the approach charts, I noticed something unusual. The LNAV/VNAV minima is set higher than the LNAV minima for this particular RNP approach. Traditionally, I've seen LNAV/VNAV minima being lower due to the added vertical guidance, compared to LNAV which only provides lateral guidance. I'm curious to know the rationale …
Is GLS (GBAS landing system) an RNAV approach?
PBN which is contrast to conventional navigation consists of RNAV and RNP. And I know that general RNAV approach of IAP has up to 4 minima such as LPV, LNAV, LNAV/VNAV, and LP. And I know that GLS approach is precision approach that use GBAS as well as GPS, but GLS approach procedure chart is separated with RNAV approach chart.