Virtual Glideslopes

Your article on GPS approaches featuring WAAS-enhanced glidepath generation was very informative and clarified a number of points. There is also another approach which is not an official FAA approach and, as far as I know, is only available using Garmin WAAS navigators. It is a LNAV+V approach, and you will not see it on the minima section of an approach chart.

Editorial Staff

Tuesday, November 25, 2014 at 12:00 AM ET

Verified

Key Takeaways:

A pilot clarifies the use of LNAV+V approaches, noting they provide an advisory glideslope through Garmin WAAS navigators but are not official FAA approaches with vertical minima.
Another pilot expresses satisfaction with their Garmin GDL 88 ADS-B IN/OUT system, highlighting its safety benefits from reliable TIS-B traffic and terrain warnings, despite an earlier article's negative review.
Additional tips for water landings (ditching) include carrying small "spare air" breathing systems for underwater escape and a specific method for tethering a liferaft using modified parachute cord to prevent it from floating away or sinking with the aircraft.

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Your article on GPS approaches featuring WAAS-enhanced glidepath generation (Virtual Glideslopes) was very informative and clarified a number of points. There is also another approach which is not an official FAA approach and, as far as I know, is only available using Garmin WAAS navigators. It is a LNAV+V approach, and you will not see it on the minima section of an approach chart.