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Calculate the Mach number, given the following:

TAS: 455 kt
OAT: -40°C

  • A
    0.77
  • B
    0.73
  • C
    0.75
  • D
    0.81

TAS = Mach No × 38.95 √ OAT (Kelvin)

Mach No = 455 / 38.95 √ (273-40) = 0.77

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