I have been calculating this question but I just don't seem to get the correct answer.
For this question use Performance Manual CAP 698 SEP1 Figure 2.3.
Using the climb performance chart, for the single-engine aeroplane, determine the ground distance to reach a height of 2000 ft in the following conditions:
OAT at take-off: 25°C
Airport pressure altitude: 1000 ft
Aeroplane mass: 3600 lb
Speed: 100 KIAS
Wind component: 15 kt Headwind
*TAS = 104kt (from using CRP-5)
GS = 104kts - 15kts = 89kts* Climb Gradient = 10.7% (from chart)
Still Air Distance = (2000 / 10.7) X 100 = 18,691ft
Ground Distance = 18691 X (89/104) = 15,995ft
But the CAE Oxford ATPL says that 16,850ft is the answer.
The next closest answer is 15,750ft which is what I would choose.
Please help me out here, thank you in advance!
Reference: CAE Oxford ATPL Chapter 8, Question 4.