VNE, never-exceed speed

VNE, or never-exceed speed, is the maximum indicated airspeed published for an aircraft. It is commonly marked by a red line on the airspeed indicator. The aircraft's POH or AFM defines the applicable limit and any conditions, configurations, or operating restrictions associated with it.

What it governs

VNE protects against hazards such as excessive aerodynamic loads, flutter, control problems, and structural damage. It is an indicated airspeed reference, so pilots should not replace it with true airspeed or groundspeed. The limit can depend on aircraft variant, configuration, altitude, and operating limitations.

A pilot must also account for gusts, turbulence, abrupt control movement, and other conditions that can increase loads. Staying below the red line does not make every maneuver or atmospheric condition acceptable. The approved aircraft information remains the controlling source.

Example

If an aircraft's indicator red line is marked at a published value, the pilot keeps the indicated airspeed below that limit and follows any additional POH restrictions. In turbulence, the pilot uses the handbook's recommended technique rather than treating VNE as a target speed.

Why it matters

Exceeding VNE can expose the aircraft to loads and aerodynamic effects outside its approved operating envelope. The risk is not defined only by the number visible on the indicator. Aircraft condition, altitude, temperature, turbulence, and configuration can also matter.

This entry intentionally does not provide a generic VNE value. Use the current POH or AFM, cockpit markings, and applicable operating limitations for the aircraft being flown.

Related terms and tools

• VA, maneuvering speed
• Indicated airspeed
• FAA Pilot's Handbook of Aeronautical Knowledge