Sec. 25.1505 — Maximum operating limit speed.
The maximum operating limit speed (
V MO/
M MOairspeed or Mach Number, whichever is critical at a particular altitude) is a speed that may not be deliberately exceeded in any regime of flight (climb, cruise, or descent), unless a higher speed is authorized for flight test or pilot training operations.
V MO/
M MOmust be established so that it is not greater than the design cruising speed
V Cand so that it is sufficiently below
V D/
M Dor
V DF/
M DF,to make it highly improbable that the latter speeds will be inadvertently exceeded in operations. The speed margin between
V MO/
M MOand
V D/
M Dor
V DF M/ DFmay not be less than that determined under §25.335(b) or found necessary during the flight tests conducted under §25.253.
[Amdt. 25–23, 35 FR 5680, Apr. 8, 1970]
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