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You are at FL300 and receive clearance to descend and be at a point 150 NM away at FL030. Given your TAS is 333 kts and there is no wind, at what Rate of Descent (ROD) should you descend by?
  • A
    1 800 fpm
  • B
    1 000 fpm
  • C
    1 300 fpm
  • D
    850 fpm

Required ROD is given in feet per minute (ft/min.).
Altitude needed to descend (ft), 30 000 - 3 000 = 27 000 ft, divided by the time for that descend 150 / 333 = 0º 27’.

ROD = 27 000 ft / 27 min. = 1000 ft/min

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