I did have a few thoughts/questions and I don't mean them to be confrontational or rhetorical. If you were doing the ILS you mentioned why do you need to know you are over PALOS?
No, that's helpful, thanks. That's what I was curious about. On the plate, there is no asterisk next to PALOS in the profile view with a note that says "LOC only," like there is next to the visual descent point. There is, however, an asterisk next to the step down altitude of 1380
. As the pilot flying the ILS approach, I don't need to know when I reach PALOS, I just follow the GS like you said. I guess it's just hard to make two approaches on one plate without having at least some confusion!
Follow up question: Approach may tell me: "You are 1 mile from PENYY, turn left heading XXX to join the localizer, maintain X,XXX until established...etc."
Does "1 mile from PENYY" count as a radar callout, or would it have to be right over the fix?
What type of GPS?
It varies between a Garmin G430 only 1 cycle out of date, sometimes a Bendix King KLN89B or 94, and one of those never gets updated. That's interesting about the AFM supplement, I hadn't thought to look there. Thanks for that.
are you not able to use the GPS to see when you 3.6 miles from the threshold? If I understood correctly the gps is still usable to tell you where you are, it's just the the data regarding fixes and procedures may not be the most up to date.
Yes that's correct, as long as the fixes haven't changed on the plate since the GPS was updated, I can tell. Although the GPS is a little different and maybe confusing too, in that it measures the distances between fixes, but not to the DME equipment. So PALOS at 3.6 DME is 2.9 from the threshold.