A380 TCAS BLUE ALERT CLIMB CLIMB DESCENT MODE

THIS IS A SCENARIO OF INTRUDER APPROACHING TOWARD AND TCAS IN TA/RA MODE WHICH TRIGGERED CLIMB CLIMB DESCENT SITUATION.

[@akahoshi53fujikawa22]

Can the TCAS system interactive with other aircraft?
For example, A and B getting close, then TCAS in A tells TCAS in B to do the opposite maneuver?
Or, is it just detect if the other aircraft is climbing or descending, then command our aircraft to do the opposite maneuver?
Can anyone teach me which one is correct?

[@lordwizrak1905]

TCAS works in tandem between the two. You don’t get commands at random on whether to climb or descend. TCAS tells one plane to climb and the other to descend to clear conflict. This is entirely the purpose of TCAS being used.
If during the climb or descent ATC instructs either plane to climb, or descend, the pilots in this case MUST ignore ATC’s commands and inform ATC that their current uncommanded change in altitude is being done by TCAS.
In this case where you see this plane get a command to descend, the other plane that they are conflicting with will get a command from TCAS to climb.
The only reason they got opposite commands after initiating a climb is only due to the other aircraft ignoring their TCAS command and climbing when they should descend, so TCAS detects the other plane climbing and tells the current flight crew to descend to avoid the conflict that would continue if they both climbed.

[@akahoshi53fujikawa22]

I somewhere heard about TCAS works in pair, which is like you said.
After I had watched this video, I was like, ??? Why two planes are both climbing?!
But after your detailed answer, I clearly got it.
Thank you very much😊

[@chiroyce]

@@lordwizrak1905 If ATC asks you to do anything while TCAS is active, you just say "Unable, TCAS RA" right?

[@lordwizrak1905]

@@chiroyce Yes. TCAS takes precedence over ATC commands.

[@lezhu6856]

@@lordwizrak1905 but didn't you just say that "the pilots in this case MUST ignore TCAS?"
I'm not in aviation, a bit confused

[@markfosseth8047]

Do Airbuses automatically climb or descend according to tcas ?

[@shollie]

Yes

[@markfosseth8047]

@@shollie thx, Boeings don’t do it automatically correct ?

[@shollie]

@@markfosseth8047 I think so yes, Boing just tells the pilot to decent or climb

[@mdjmurray]

Boeing autopilot ignores TCAS. It’s up to the pilot to disconnect and fly manually.

[@blumac9801]

If the aircraft is equipped with AP/FD TCAS mode, which is a relatively modern Airbus feature.

[@mdjmurray]

TCAS flight directors. Why doesn’t every passenger aircraft have this?

[@devon896]

It does.

[@blueb0g]

@@devon896 No it doesn't. TCAS FD commands are a new option in use only on a few Airbus aircraft.

[@NickyNiclas]

@@blueb0g It makes sense since it's the autopilot responding to TCAS in this case.

[@harisman100]

Why two different commands?

[@airflo_muc]

Because the intruder also climbed.

[@Kanru-5829]

There are occasionally “TCAS Reversals” where a craft is told to climb, but the other craft also climbs, so TCAS reverses the command and says to descend.

[@michalw6965]

Reversal RA updated sińce TCAS 7.1

[@kimklim3267]

…it’s a simulator exercise…

[@mastersonogashira1796]

prob a system test to see if the tcas can process the different

[@SMN435]

Could someone explain to me how VOR and ADF work (The little switches next to the barometer below the range change for nm). I have been confused for a while I know everything else just them two I don’t understand.

[@unfathomable1876]

The VOR arrows are showing direction and distance from the VOR beacon via radio frequency

[@SMN435]

@@unfathomable1876 so you mean the atc frequency ILS frequency???

[@SMN435]

@@unfathomable1876 or*

[@mickeymcnaughton2555]

I really wanted to explain what each is and how each works, truncated to less than 50 words per explanation.
I won't achieve that just at the moment, so I've withdrawn my detailed explanation from last week which explained each of them in detail.
If I can give you an explanation of them in less than 50 words per item, I just might check back in here again.

[@SMN435]

@@mickeymcnaughton2555 No problem at all. You be you :)

[@bruhmomento9967]

I don't understand a bit. If the other plane was above him, why was TCAS telling him to climb?

[@kinouillek]

Conflicting aircraft was close to the same altitude so the plane told the pilot to climb to avoid the aircraft… But then the other plane also started to climb and rapidly so the Airbus told the pilot to descend instead. Just a sim exercise though. In real life the TCAS would have told the other aircraft to go down and this one to go up… or the other way around.

[@blueb0g]

It wasn't. The other aircraft was 100 feet below at the beginning of the engagement.

[@bruhmomento9967]

Yea so in that case why did second plane also started climbing? Shouldnt TCAS make him descent(2scd plane I mean)

[@flyprdu]

@@bruhmomento9967 Its a simulated demonstration

[@blueb0g]

@@bruhmomento9967 This is demonstrating a situation where the intruder aircraft does not follow TCAS instructions, so TCAS on the engaged aircraft reverses and tells the crew to descend.

[@AUTMUSENETWORK]

Safe???

[@embeddd]

?

[@AUTMUSENETWORK]

@@embeddd so this plane ended up safe

[@embeddd]

@@AUTMUSENETWORK yes

[@embeddd]

@@AUTMUSENETWORK its a cockpit simulator, not a real plane

[@AUTMUSENETWORK]

@@embeddd thanks…