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Old 11th January 2025 | 10:13
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Specaircrew
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Joined: Feb 2000
: Military (Retired)
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From: It's a secret
Originally Posted by ahramin
I think it depends on whether or not the aircraft is in radar airspace. The TCAS II may not be using Mode A interrogations but the Secondary Surveillance Radar is and TCAS II will see the replies to those interrogations.
That’s interesting, I don’t suppose you have a source for that info?
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