What is the maximum landing gear retraction speed (VLO)?

The maximum landing gear retraction speed, commonly referred to as VLO, is critical for ensuring the safe operation of an aircraft during the transition from landing to climbing. In this case, the value of 163 knots indicated airspeed (KIAS) is the limit established for retracting the landing gear. This means that the landing gear can be safely retracted up to this speed without risking mechanical failure or damage to the landing gear system.

This speed is determined based on several factors, including structural considerations of the landing gear and the overall aerodynamic characteristics of the aircraft. Exceeding this speed while attempting to retract the gear may lead to complications such as gear malfunction or failure to retract properly, adversely affecting the aircraft's performance and safety.

Having a well-defined VLO also allows pilots to manage their speeds effectively during critical phases of flight, ensuring that procedures for gear retraction are followed within safe operational bounds. Understanding this limit is essential for pilots to make informed decisions during takeoff and climb, contributing to overall flight safety and efficiency.