Originally Posted by pmillard
Thanks Steve. Thatís good to know.
As a Garmin tech can I ask you one more question? In the Procedures section of the GPS175 Pilotís Guide under Feature Requirements it says that a ďbaro-corrected altitude sourceĒ is recommended (which I donít have) and therefore, altitude leg types require manual sequencing.
What does that mean?
You are welcome.
The most common case where it is useful to have a baro corrected altitude source is for missed approaches such as KTOP RNAV (GPS) RWY 18.
The missed approach procedure is "Climb to 1500' then climbing right turn to 3600' direct GUKEC and hold".
When this missed approach procedure is flown with a GPS 175 receiving baro corrected altitude, all leg sequencing is continuous and automatic because the GPS 175 can "watch" you climb to 1500' and automatically transition to the right turn leg after you reach 1500'.
In the absence of this information, leg sequencing is suspended, and the pilot has to unsuspend to activate the right turn leg after the climb to 1500' is complete.