Plus for a circling approach you would always require ceiling to dispatch. As well as if the chart requires it. I think there are a few airports in central and South America that say “CEILING REQ”You dispatch off of vis and in very rare cases ceiling as well (think ETAR) however the crew cannot start their approach if they do not have sufficent vis and ceiling. It's a good idea to always keep the ceiling in the back of your mind.
The way I was looking at it was if its gonna divert anyway due to the cigs being below mins while VIS is still legal then why not just delay the flight until the weather improves.If we sat around playing with theories or “what ifs” then flights would never take off. Vis is what you need to dispatch and if it’s down to a go/no-go decision like that, you are going to have AT LEAST 1 if not 2 alternates so what’s the anxiety for? If you have the vis, launch the flight and keep an eye on em. Let them at least give it a poke and if they can’t do it divert.
Cuz ceiling forecasts are seldomly that accurate. Not launching when you have excellent vis and a ceiling that is illegal by 100ft would feel pretty silly. Especially on a long haul flight. I've seen dispatchers be concerned about BKN 010. Next time you see a low ceiling in a metar at a nearby airport with great vis look outside and you'll realize vis is much more important than ceiling.The way I was looking at it was if its gonna divert anyway due to the cigs being below mins while VIS is still legal then why not just delay the flight until the weather improves.
The way I was looking at it was if its gonna divert anyway due to the cigs being below mins while VIS is still legal then why not just delay the flight until the weather improves.
How soon after hiring at a regional (and/or major) did you guys start class?
The way I was looking at it was if its gonna divert anyway due to the cigs being below mins while VIS is still legal then why not just delay the flight until the weather improves.
That’s correct as I understand it.My understanding is if codes are different then 2 NAV applies
My understanding is if codes are different then 2 NAV applies
As long as there are 2 different identifiers it is two separate approaches. Because there are 2 identifiers, it means that there is equipment at either end of the runway to do an approach. If they had the same identifier, one would be a back course meaning it uses the same equipment.
Correct, because they both use the same equipment for the approach: the satellites. The assumption is that the external equipment could fail. If 1 side of an ILS fails, it wouldn't take out the other if it was a different identifier, however if the satellites go down it will take out both GPS and RNP.Thanks for the quick responses, that helps a lot. Now I'm flipping through a bunch of different approach plates and it seems like every single one has two different identifiers where the 2 navaid rule would apply. But GPS and RNP are one navaid only
In order to be able to calculate using both approaches though, you need to be within wind limits. Alternate approach(es) always need to be within wind limits. Destination does not.Thanks for the quick responses, that helps a lot. Now I'm flipping through a bunch of different approach plates and it seems like every single one has two different identifiers where the 2 navaid rule would apply. But GPS and RNP are one navaid only