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According to CS 25, the worst effect of a major failure on an aeroplane is..
  • A
    no effect on operational capabilities or safety.
  • B
    a significant reduction in functional capabilities or safety margins.
  • C
    a slight reduction in functional capabilities or safety margins.
  • D
    a large reduction in functional capabilities or safety margins.
Refer to the figure

For these type of questions, you need to know the 5 different safety effects according to CS-25. The table in the annex comes from CS-25 and should help you learn each of the safety effects.

As you can see “a significant reduction in functional capabilities or safety margins” is classified as a major failure

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