Airports with GPS Approach as Alternate??
- Thread starter Champcar
- Start date
ZapBrannigan
If it ain’t a Boeing, I’m not going. No choice.
Incorrect.
IF your destination is served only by a GPS approach, then your ALTERNATE (if one is required) must have a conventional ground-based approach.
I believe it was in AC90-100 or something... I'll try to find it for you.
IF your destination is served only by a GPS approach, then your ALTERNATE (if one is required) must have a conventional ground-based approach.
I believe it was in AC90-100 or something... I'll try to find it for you.
surreal1221
Well-Known Member
^ :yeahthat:
tgrayson
New Member
The alternate minimums for GPS approaches was "N/A", so that's where the "reg" came from. WAAS removes this restriction, but I'm not sure where that leaves non-WAAS equipment.
GlideSlope
Well-Known Member
Page 2-11, Instrument Procedure Handbook: Airport may not be qualified for Alternate use if the airport navaid is unmonitored or is GPS based or does not have weather reporting capabilities.
Champcar
Well-Known Member
Thats what I figured was going on.
ghogue
Well-Known Member
AIM 1-1-20. Wide Area Augmentation System (WAAS)
(a) Due to initial system limitation, there are certain restrictions on WAAS operations. Pilots may plan to use any instrument approach authorized for use with WAAS avionics at a required alternate. However, when using WAAS at an alternate airport, flight planning must be based on flying the RNAV (GPS) LNAV minima line, or minima on a GPS approach procedure, or conventional approach procedure with "or GPS" in the title. Code of Federal Regulation (CFR) Part 91 nonprecision weather requirements must be used for planning. Upon arrival at an alternate, when the WAAS navigation system indicates that LNAV/VNAV or LPV service is available, then vertical guidance may be used to complete the approach using the displayed level of service. The FAA has begun removing the
NA (Alternate Minimums Not Authorized) symbol from select RNAV (GPS) and GPS approach procedures so they may be used by approach approved WAAS receivers at alternate airports. Some approach procedures will still require the
NA for other reasons, such as no weather reporting, so it cannot be removed from all procedures. Since every procedure must be individually evaluated, removal of the
NA from RNAV (GPS) and GPS procedures will take some time.
(a) Due to initial system limitation, there are certain restrictions on WAAS operations. Pilots may plan to use any instrument approach authorized for use with WAAS avionics at a required alternate. However, when using WAAS at an alternate airport, flight planning must be based on flying the RNAV (GPS) LNAV minima line, or minima on a GPS approach procedure, or conventional approach procedure with "or GPS" in the title. Code of Federal Regulation (CFR) Part 91 nonprecision weather requirements must be used for planning. Upon arrival at an alternate, when the WAAS navigation system indicates that LNAV/VNAV or LPV service is available, then vertical guidance may be used to complete the approach using the displayed level of service. The FAA has begun removing the
And you must be equipped to fly that approach without relying on the GPS, meaning if the ILS at your alternate requires ADF or DME you can't fly it using GPS as a substitute.
I just reviewed that section of the FAA's new IFR procedures guide today.