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Refer to figure.
Given the following information, determine the gradient and vertical speed after take-off:

OAT: 0°C
Pressure altitude: 1 000 ft
Take-off mass: 11 500 lbs
Flaps: Clean

  • A
    6.3% and 750 ft/min.
  • B
    6.5% and 631 ft/min.
  • C
    6.5% and 750 ft/min.
  • D
    6.3% and 611 ft/min.

Refer to figure.

(1) Read the "Corrections" at the bottom of the table:
"Pressure Altitude: Increase OAT by 10ºC/1000 ft"
Read the values at the intersection of a mass of 11 500 lbs (11.5) and OAT of 10ºC: V2 = 119 kt and GRAD = 6.3%

(2) V2 = 119 kt is our True Air Speed.

(3) Calculate the Rate of Climb using the formula:
Rate of Climb (ft/min) = Gradient (%) x True Air Speed (kt)
Rate of Climb = 6.3 % x 119 kt = approx. 750 ft/min

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