Don’t know anything about that. But since it’s confidential, I won’t ask you to elaborate. [emoji850]


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Yes and no. Delta has the same basic vnav we do but others have the way way better geometric vnav software.
I flew the geometric at another airline and I still cuss out ours daily. Not because I don't understand it but because how much the geometric would save us in fuel and not bust altitudes.
But hey remeber to single engine taxi and dont turn on that apu to keep the plane cool.

Southwest ETOPS certification
 

Much like the battered spouse of an alcoholic, I have just grown accustomed to being abused by VNAV.
I don’t even bat an eye anymore when it dives off the cliff at transition altitude and goes into VNAV SPEED without so much as a warning. I expect it. I embrace it. It’s like a warm blanket that lets me know I am still alive.

I did fly with someone formerly from the airline that shall not be named who accidentally took off with VNAV armed. I braced for the explosion after liftoff, but the plane actually commanded pitch and power to clean up on schedule and climb out normally without spinning knobs or hitting buttons. The best part? In the absence of LNAV being armed, it automatically goes to heading mode at 400’. I scolded said pilot for putting us in danger, but something tells me he didn’t care.

Why use VNAV for takeoff??

It’s not like there’s much to do. Sheesh.

It protects you from flap overspeeds for one.... but mostly because you would be flying the airplane the way it was designed to be flown.


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He's threatened his fellow pilots in the past, pushes the boundaries of the social media policy, and so on. He cannot get over the merger and that is his biggest issue. The chip on the shoulder needs to go. Two simple ideas: 1. Look in a mirror before casting stones. 2. It's better to remain silent and be thought the fool than to speak and remove all doubt. He has failed in both of those two primary objectives. Your opinion may differ and that is fine.

Yes. I was being sarcastic.

Makes things a LOT easier and safer.

But at least the bag count and weight are accurate.

Operator specific.

VNAV has been an issue on every model from the 737-300 (1989) through the -900ER, even with late line production models as recent as 2017 right off the production line.

You’d think after almost 40 years, Boeing would have figured this VNAV stuff out by now.

From ToD, thrust levers reduce to flight idle. The thrust levers come back faster than the nose pitchess down resulting in speed decrease below FMC speed. Then, when T/Ls are at flight idle, they are commanded forward to recapture FMC speed.

Like before magical VNAV, I use 3 for 1 plus XX miles.

I start off with V/S and switch over to VNAV.

To soften the VNAV blues, I edit the Descent Wind Page every couple of thousand feet. VNAV Path solution is recalculated every time the ENTER key is pushed.

You don’t remember him talking about FDAP incidents in detail on this forum? A search of his messages will provide the info you seek. He’s very lucky he wasn’t tracked down and immediately terminated.

I would love to have geometric path. However, I was under the impression the idle path was for fuel savings. I'm not enough of a whiz and too lazy to figure it out but idle descents at the last possible second would seem to be more fuel efficient, just not as easy to work with for us and worse for the pax. SWA could switch the logic anytime they want to I assume. The just choose not to.