TCAS. Done correctly?

I kinda wondered what type angle or closure rate would require that, especially if they were both level( not sure they were) .I never had one that a little pressure fore or aft to 500 ft/ min would not resolve. Folks in back never knew about it. I am not saying it could not happen, at any rate, lives were saved .
 
The maximum vertical speed advised by TCAS is 2,000 ft/min. Conceptually in the worst-case scenario a 2,000 ft/min descend advisory is no longer deemed best and becomes a 2,000 ft/min climb target.

How swiftly the crew responds to that revseral of guidance is up to them and the conditions.
 
The Airbus has a history of FAs and pax getting injured once the pilot clicks off the AP in the flight levels and start man-handling the side stick.


Throughout my career I've seen a couple times the AP click off midflight. A couple times accidentally, a couple times randomly/failure. The cool guys take a second to figure out what's going on, the snappy guys go immediately hands on yoke/side stick and in the process of doing so, disturb what was our stable, level flight. Luckily, only slightly. Seriously though, you're up here in the Flight Levels - you need to be sensitive and easy on the controls. Most likely case is you're going to over control. Part 121 pilots do 99% of their hand flying below 10k. Cruise flight is almost always with AP on (unless deferred, but in that case you're below 29k).
 
It's only meant to be a 1/3 to 1/2 g maneuver at most, even the "reversal" kind.

In fairness, a third to a half of a g is actually a lot to people who probably haven't been much beyond 0.5g to 1.5g, too. But if you've put someone on the overhead or on the deck with your RA compliance, there's a good chance you were doing it too aggressively.
 
Autothrust Blue said:
It's only meant to be a 1/3 to 1/2 g maneuver at most, even the "reversal" kind.

In fairness, a third to a half of a g is actually a lot to people who probably haven't been much beyond 0.5g to 1.5g, too. But if you've put someone on the overhead or on the deck with your RA compliance, there's a good chance you were doing it too aggressively.
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I think this is partly because the sim instructors that I've experienced start yelling to put it in the green the second it goes off. I know it's urgent but the yelling causes increased agression with the manuever.
 
Pilotcollin said:
Allegiant A320 Narrowly Avoids Mid-Air Collision, Injures Flight Attendant

Correct me if I’m wrong but I have responded to RA’s several times. Never have I floated or slammed a pax to the floor. Is this a last of SA and quick panic? Poor training? Or a result of No experience in the cockpit. I know 1500 hours for ATP but CFI for 1300 doesn’t count as real world experience.
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Well, I can only analyze and advise if you're wrong if you tell me precisely how many times AND if, according to your understanding, that number of times equals "several". :biggrin:

But yeah, generally one has time to react smoothly. Smooth is almost always the goal of everything we do in aviation; Sadly, the often untaught/untrained/non-transferred goal.
 
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tlove482 said:
I think this is partly because the sim instructors that I've experienced start yelling to put it in the green the second it goes off. I know it's urgent but the yelling causes increased agression with the manuever.
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Well, they're wrong too.

I've got one very good friend who was put "on the roof" by an overzealous reaction to an RA in an E-jet (they were climbing like a bat out of hell, and got a "Descend! Descend") and it kinda makes me twitch a bit every time I think about it.

It's a thing that you need to do without delay (RA implies 35 seconds or less to hitting someone else) but that does not mean you need to (or should) do it abruptly.
 
For the inevitable "but Auto! what does without delay mean? A line check pilot who's best friends with a sim instructor's girlfriend's wife told me Ferris passed out 31 Flavors last night" -- well, this is what EASA says:
Screenshot 2023-08-02 at 08.48.45.png
 
BobDDuck said:
The TCAS Blue function on the new Arbii is a good example of just how smoothly an RA, including a reversal, can be flown.
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Yup. We had on the 321NEOs, but since it wasn't on the 319/320s, the SOP was to still do AP/AT off, FD off, and fly the green, avoid the red - manually regardless of 319/320/321.
 
Autothrust Blue said:
Well, they're wrong too.

I've got one very good friend who was put "on the roof" by an overzealous reaction to an RA in an E-jet (they were climbing like a bat out of hell, and got a "Descend! Descend") and it kinda makes me twitch a bit every time I think about it.

It's a thing that you need to do without delay (RA implies 35 seconds or less to hitting someone else) but that does not mean you need to (or should) do it abruptly.
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It’s a nice, smooth, calm maneuver. Just get it out of the red and into the green. Smooooooooooooth…
 
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