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(For this question use annex 032-005 or CAP 698 Figure 2.4).
Pressure altitude:10000 ft
Mass: 2860 lb
Temperature: -2°C
Runway LDA: 2000 ft

Given the following information, determine the minimum or maximum wind component for the SEP aircraft to land.

  • A
    Minimum 19 kt headwind.
  • B
    Minimum 38 kt headwind.
  • C
    Maximum 6 kt tailwind.
  • D
    Maximum 4 kt tailwind.

Refer to figure.

This question requires you, first of all, to factor the published LDA down by dividing it by 1.43 to derive a value to enter the graph: 2 000 ft / 1.43 = 1 399 ft.

(1) Enter the graph on the right hand-side at a value of approx. 1 399 ft. Follow the reference lines diagonally down to the REF Line. From this point, plot a horizontal line to the left to the wind reference line;
(2) At the left section of the graph, enter at a temperature of -2ºC and continue vertically up until you intersect a pressure altitude of 10 000 ft. From this intersection, move horizontally to the right to the next reference line. At the weight grid, apply a mass of 2 860 lb. Continue to the right to the wind grid reference line. Find the wind by following the reference lines down and to the right until it intersects the line plotted in step (1). Drop down vertically and read the wind strength of approx. 19 kt (headwind).

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