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Yes, different incident - I wasn't at the 2004 fly in, I don't believe. I do vaguely recall KMIE in early 2013 - that was right after my instrument checkride. Almost certainly I flew there without Jean - she only flew a couple of times in my Cardinal. And yes, Kent, I think Jean met you but I...

The first, of course. And I've never tried it, so I won't venture an opinion.

Sure, but the problem isn't that I don't know the words, it's that I can't parse them when spoken on the radio - I think a big part of it is the Québecois accent, which just gives me a lot of trouble. All of my French teachers in K-12 (2nd grade through 12th) were educated in Paris. It reminds...

Oui, écrite, je le comprends... mais sur la radio, je n'ai aucune idée de ce qu'ils disent.

Je comprends la langue ecrite, et aussi parlee (si pas trop vite!), mais sur la radio dans l'air, je la trouve tres difficile a comprendre.

I have my duck too - it's in my flight bag though. I forget exactly when I got it, though I think it was Dave Belfi who gave it to me, not Moxie.

Hi Ed! Yes, at Lake Lawn. I was going to fly us home, but the starter failed. Jean actually tried to hand prop it with me at the controls, but it wouldn't so much as fire once. I had to work the next day and so jumped at another pilot's offer to fly me home, while Jean stayed with the plane -...

Thanks, Liz. I'd forgotten that you had met her as well. Definitely, good times...

I'm not sure how many here remember Maverick, whose real name was Jean Douglass. She was an instrument-rated private pilot who was at one time very active on this board and especially on the Babes message board before its demise. I think her last in-person contact with the pilot community was at...

Same here, but I didn't feel like saying anything...

Somehow I missed this post before, looks like this was going to be a complete explanation for how the LNAV/VNAV DA could end up lower, and even includes some diagrams from the current RNAV approach TERPS order .58B. I really wonder what the rest of this paragraph was going to say? Either way...

Downloading it now - thanks. Yeah, I thought the .50 might be way obsolete...

I've been digging through a number of internet sources, including Order 8260.50 (FAA's LPV Approach Procedure Construction Criteria, but might be superseded as it is from 2002) and I think I see another, simpler way the algorithm for determining the LPV and LNAV/VNAV DAs might generate a lower...

The steeper climb gradient on the missed is, of course, to be expected since the RNAV Z gets you so much lower and closer in. And the chart note, I guess, also explains why they created the RNAV Y with its higher minimums, to establish an approach that aircraft incapable of such a steep climb...

Very interesting. Two RNAV approaches along the exact same approach course with the same glide path and TCH, but with vastly different minimums. How can the algorithm to determine the vertically guided DAs and the non-precision MDAs through analysis of obstructions along the final approach path...

Thanks. Now, does anyone know why the LNAV/VNAV DA is significantly lower than the LPV DA on the RNAV 16 X at KRNO? Inquiring minds and all... ;)

In the case of the RNAV 16L X at KRNO (in the thread linked to by @RussR), I think it's more than an academic exercise: if I was flying that approach and the ceiling was right in the 700 to 800 ft. range, I'd definitely want to know whether I can safely descend to the lower LNAV/VNAV DA using...

Thanks @RussR . Still seems somewhat mysterious. One thing I note in this case, though, is that the difference is only 12 feet and thus makes no practical difference in how I'd fly the approach. The difference in the case in the other thread is more significant, roughly 50 feet. So the question...

Now I'm not so sure. This article from IFR magazine discusses the differences between the LNAV OCS and the LNAV/VNAV OCS and the different ways that the MDA and DA are determined. Apparently the LNAV/VNAV OCS has a flat part inside the DA. The LPV OCS is a sloping surface that is offset from the...

On an approach with both LPV and LNAV/VNAV sets of minimums, why might the LNAV/VNAV DA be lower than the LPV DA? Ron says he is aware of such an approach, but I have no more details. I know there are cases where the LNAV MDA can be lower than the corresponding APV DA, because the obstacle...