SECL stands for various terms. Discover the full forms, meanings, and possible interpretations of SECL across different fields and industries.
Selective Calling. A high-frequency system enabling air traffic control to alert a particular aircraft, by means of flashing light or aural signal in the cockpit, for receipt of a message without the crew having to maintain a listening watch. Used on long-haul over-ocean airline routes and by intercontinental business jets. Selective Calling System, Selective Calling system (used primarily with HF)
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