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The flight envelope protection function(s) consist(s) in:

1 – automatically performing an evasion manoeuvre if necessary
2 – preventing the aircraft from exceeding the limits for specific flight parameters
3 – alerting the flight crew in case of dangerous proximity with a threatening traffic
4 – preventing any incursion beyond an ATC clearance

The combination that regroups all of the correct statements is:

  • A
    1, 2.
  • B
    1, 3.
  • C
    2, 3, 4.
  • D
A flight envelope protection system generates a control signal when the aircraft exceeds some flight envelope limits. The main functions of the flight envelope protection (FEP) system are:
  • the stall protection (with the stick shaker),
  • the bank angle protection,
  • the pitch angle protection,
  • the speed protection (overspeed or low energy state).
Normally the basic FEP functions only generate control signals without automatically performing an evasion maneuver. Only certain aircraft types perform an evasive maneuver.

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