Green vs Magenta needle on VOR Approach

[MikeD]

I teach it both ways. But I am curious as to where WAAS comes into play. If one can shoot an approach down to LNAV mins without WAAS, certainly one can navigate to the VOR and do the procedure turn without WAAS as well, before switching to green needles.

DPE says it is in the IFH. I cannot find any reference to WAAS in there.

Yes. WAAS is for the LPV, as the SBAS is where LPV sources its vertical guidance information from. Whereas VNAV in LNAV/VNAV sources its vertical guidance from Baro altitude. Hence the note on the approach plates that have LNAV/VNAV regarding extreme temps and compensated systems.

 

[MidlifeFlyer]

I am not at all familiar with that GPS… But is it not as simple as line selecting the hold and deleting it? Or alternatively selecting direct to the holding fix?

Yes. That’s all it is.

 

[MidlifeFlyer]

Ha! They don’t know how to negate the hold or step past it? Or they don’t know that they need to in this case? But even that one being an ILS, at worst I’d let them load the approach for reference but have the A/P coupled to intercept the raw localizer so the hold doesn’t happen unless the pilot makes it happen. Though they still need to know how to do it anyway, as if this were an RNAV and doing it GPS-coupled, they’d have the same problem you’re describing. But still, your point is well made.

I’ve seen both. Not checking the flight plan page to see if the sequencing is correct is an error that appears in a number of situations. But I’ve also had some say after showing them how to delete the hold, “I’ve never seen that.”

And yes, I could do the same with an RNAV approach with the same result. Besides, even with the ILS, if you want missed approach sequencing (where you are not getting an ATC-directed miss), you need to be sure the sequencing is correct.

 

[MidlifeFlyer]

I teach it both ways. But I am curious as to where WAAS comes into play

WAAS gives us two things. Tighter lateral capability on the FAS - LP vs LNAV - and official vertical guidance - LPV vs LP or LNAV. It doesn’t have anything to do with normal lateral directing like prompting or directing a GPSS autopilot around the turns.