What is the maximum speed for gear retraction (Vlo) in KIAS?

The maximum speed for gear retraction, or Vlo, is the highest airspeed at which the landing gear can be safely retracted. This speed is critical because exceeding it might lead to structural issues or mechanical problems with the landing gear system during retraction. In many multi-engine aircraft, the Vlo is specified in the operating handbook and is generally designed to ensure that pilots can retract the gear without risking damage to the aircraft.

The correct value of 109 KIAS serves as a guideline for pilots to ensure that they retract the landing gear within a safe operating speed. Flying above this threshold could potentially result in complications, such as the gear not retracting properly or even becoming damaged due to aerodynamic forces acting on the extended gear at higher speeds.

The other values listed, such as 140 KIAS, 169 KIAS, and 202 KIAS, do not align with typical specifications for gear operation speeds found in most aircraft. By adhering to the indicated maximum speed for gear retraction, pilots ensure both safety and compliance with the aircraft's operating limitations.