10 / 20
The take-off runway performance requirements for transport category aeroplanes are based upon:
  • A
    one engine inoperative only.
  • B
    failure of the critical engine or all engines operating whichever requirement gives the greater distance.
  • C
    all engines operating only.
  • D
    failure of the critical engine only.
CS 25.113
Take-off distance and takeoff run
(a) Take-off distance on a dry runway is the greater of –
(1) The horizontal distance along the take-off path from the start of the take-off to the point at which the aeroplane is 11 m (35 ft) above the take-off surface, determined under CS 25.111 for a dry runway; or

(2) 115% of the horizontal distance along the take-off path, with all engines operating, from the start of the take-off to the point at which the aeroplane is 11 m (35 ft) above the take-off surface, as determined by a procedure consistent with CS 25.111. (See AMC 25.113(a)(2), (b)(2) and (c)(2).)

(c) If the take-off distance does not include a clearway, the take-off run is equal to the take-off distance. If the take-off distance includes a clearway –

(1) The take-off run on a dry runway is the greater of –
(i) The horizontal distance along the take-off path from the start of the takeoff to a point equidistant between the point at which VLOF is reached and the point at which the aeroplane is 11 m (35 ft) above the take-off surface, as determined under CS 25.111 for a dry runway; or
(ii) 115% of the horizontal distance along the take-off path, with all engines operating, from the start of the take-off to a point equidistant between the point at which VLOF is reached and the point at which the aeroplane is 11 m (35 ft) above the take-off surface, determined by a procedure consistent with CS 25.111. (See AMC 25.113(a)(2), (b)(2) and (c)(2).)
  • As you can see from the above regulation, the take-off performance will be determined on the greater distance of "all engines operating" and "failure of critical engine".

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.

  • Hungary
    1
  • Iceland
    1
  • Italy
    1
  • Poland
    1
Keyboard Shortcut Use Keyboard Shortcuts