GPS approaches question.

To confuse pilots further and keep flight instructors employed, the FAA came up with a new term "APV" or "APproach with Vertical guidance" for the LDAs with glideslope, GPS with glideslope (WAAS LPV & LNAV/VNAV), and so on. It's not precision or non-precision. See AIM and gps.faa.gov for more details.
 
To confuse pilots further and keep flight instructors employed, the FAA came up with a new term "APV" or "APproach with Vertical guidance" for the LDAs with glideslope, GPS with glideslope (WAAS LPV & LNAV/VNAV), and so on. It's not precision or non-precision. See AIM and gps.faa.gov for more details.


I saw that, is there a decent AC to really describe the setup yet or no?
 
I think this is an ICAO invention.

Yes, ref. AIM:

1. A new class of approach procedures which provide vertical guidance, but which do not meet the ICAO Annex 10 requirements for precision approaches has been developed to support satellite navigation use for aviation applications worldwide. These new procedures called Approach with Vertical Guidance (APV), are defined in ICAO Annex 6, and include approaches such as the LNAV/VNAV procedures presently being flown with barometric vertical navigation (Baro-VNAV). These approaches provide vertical guidance, but do not meet the more stringent standards of a precision approach. Properly certified WAAS receivers will be able to fly these LNAV/VNAV procedures using a WAAS electronic glide path, which eliminates the errors that can be introduced by using Barometric altimetery.
 
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