Performancespeed limitations
Normal Operating Speed (Vno)
Normal Operating Speed (VNO) is the maximum structural cruising speed of an aircraft, marked by the top of the green arc on the airspeed indicator (ASI). Flight above this speed is only permissible in smooth air and must be conducted with caution. It is also referred to as the maximum structural cruising speed.
Key Points
- •V<sub>NO</sub> marks the boundary between the green and yellow arcs on the ASI.
- •Exceeding V<sub>NO</sub> in turbulent air can cause structural damage to the airframe.
- •Flight between V<sub>NO</sub> and V<sub>NE</sub> is only permitted in smooth air conditions.
Exam Relevance
Candidates must know V-speeds and their associated ASI colour codings for safe operation and to answer instrument interpretation questions.
Related Terms
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