Practice question

What is the 'Mach Number Technique' used in Area Control Centers to maintain longitudinal separation between jet aircraft on identical tracks?

  1. Aircraft are assigned specific True Mach Numbers to maintain constant relative spacing, preventing the trailing aircraft from overtaking the leading aircraft.
  2. Aircraft fly at maximum available Mach speed at all times.
  3. Controllers calculate Mach shockwave angles.
  4. Aircraft fly in supersonic formation.

Answer: A — Aircraft are assigned specific True Mach Numbers to maintain constant relative spacing, preventing the trailing aircraft from overtaking the leading aircraft.

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