Refer to Annex or CAP 698 Fig 2.2.
What is the RTOM for the SEP given:
OAT +40°C
PA 1200 ft
De-factored TOD 2000ft 10 kts HW
Flaps approach.
Note: Question states that the runway length has been de-factored. According to paragraph 2.2.2 of SEP section of the CAP, we should enter the graph as a de-factored length - no further calculations needed.
To solve this exercise, we must draw 2 lines. The mass will be the value corresponding to the intersection of these 2 lines:
(1) First, enter the graph on the left-hand side, at a temperature of +40ºC. Draw a vertical line up until the 1200 ft pressure altitude reference line. From this intersection, continue horizontally to the right until the mass "REF LINE". Draw a line diagonally down and to the right following the reference lines (all the way to a mass of 2800 ft).
(2) Now, starting at the right-hand side of the graph, from 2000 ft, draw a diagonal line down and to the left, following the obstacle height reference lines until the next "REFERENCE LINE". From this point, continue horizontally and to the left and correct for 10 kt headwind. From the wind Reference Line, continue horizontally and to the left until you intersect the first line.
- Find the value corresponding to approx. 3550 lbs at the intersection of these 2 lines. Closest option: 3500 lb
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