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Too close on approach: How two passenger aircraft nearly collided in Barcelona

What TCAS is and how it prevents mid-air collisions

A clear explanation of TCAS and its role in preventing mid-air collisions, with relevance to Mallorca flights.

Published: July 31, 2026
Too close on approach: How two passenger aircraft nearly collided in Barcelona

Answer

What is TCAS and how does it help prevent collisions in the cockpit?

TCAS monitors nearby aircraft and issues avoidance advisories if a collision risk is detected. Pilots typically follow these advisories unless ATC instructs otherwise. This safety net operates globally, including flights approaching Mallorca.

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