I would not switch to the VASI guidance if I'm already stable on the rnav. That means power and pitch changes and a steeper angle of descent versus the rnav. The rnav provides the obstacle clearance just the same.
Something I don't understand is that the VGSI glideslope and TCH had the same values as the approach glideslope and TCH, yet it was NOTAM'd not coincident. I don't understand?
My problem is a lot of the VASI's seemed to be designed for a 172. In a corporate jet at a lot of airports, if you stay right on the VASI you'll land halfway down the runway making stopping difficult.
I heard that part 135 requires VASI to be used always but not under part 91. Just like circling is not authorized under parts other than 91. Which is true?
![PAPI versus Glide Slope! Which one should I follow? [English]](/img/n.gif)
How is each video better than the last when they’re all perfect?! Truly an incredible educator.
You know, that was one idiosyncratic points of the instrument flying environment that I totally forgot about. Good work sir!
I would not switch to the VASI guidance if I'm already stable on the rnav. That means power and pitch changes and a steeper angle of descent versus the rnav. The rnav provides the obstacle clearance just the same.
Because it won’t keep you safe below MDA, that’s why there’s a such a thing as VDP. Below MDA, you transition to the visual glide path indication.
Excellent video...best visual explanation I have seen of this concept!
Something I don't understand is that the VGSI glideslope and TCH had the same values as the approach glideslope and TCH, yet it was NOTAM'd not coincident. I don't understand?
My problem is a lot of the VASI's seemed to be designed for a 172. In a corporate jet at a lot of airports, if you stay right on the VASI you'll land halfway down the runway making stopping difficult.
Since the RNAV glidepath will keep you safe, why switch to the VASI glidepath?
Because it won’t keep you safe below MDA, that’s why there’s a such a thing as VDP. Below MDA, you transition to the visual glide path indication.
Thank you from Algeria !
Thank you now all makes sense
Awesome stuff as always, thank you
Great presentation. Thanks
Well said!
That was brilliant 👏🏾👏🏾
Always fallowed your videos for flight simmulator. I always thought this was due to the sim. Thanks for explaining.
Really useful, thanks
I heard that part 135 requires VASI to be used always but not under part 91. Just like circling is not authorized under parts other than 91. Which is true?
Love
Doesn't really answer the fundamental question: Why are the visual and rnav glideslopes different?
Good question. I would have thought that the RNAV could have been designed to match the VASI path.