Which weather constraint is part of LAHSO acceptance according to the material?

Which weather constraint is part of LAHSO acceptance according to the material?

• A. No Wind shear within 20 minutes
• B. No thunderstorms within 100 miles
• C. Winds must be from the north
• D. Optimized approach speed must be achieved

Answer: (A)

LAHSO acceptance centers on ensuring you can safely land and stop within the hold-short distance under the given weather conditions. Wind shear is a critical factor because it can cause sudden changes in airspeed and descent rate, which directly affect stopping distance. Requiring no wind shear within a 20-minute window gives the crew a predictable, safer environment to complete the hold-short requirement; if wind shear could occur, the margin to stop short could be compromised, so that scenario is not accepted for LAHSO. The other options aren’t part of the LAHSO weather acceptance criteria: winds from a specific direction isn’t a standard weather constraint used to decide LAHSO eligibility, whether thunderstorms are within a certain distance isn’t the stated criterion, and whether the optimized approach speed is achieved is a performance factor, not a weather constraint used in LAHSO acceptance.

LAHSO acceptance centers on ensuring you can safely land and stop within the hold-short distance under the given weather conditions. Wind shear is a critical factor because it can cause sudden changes in airspeed and descent rate, which directly affect stopping distance. Requiring no wind shear within a 20-minute window gives the crew a predictable, safer environment to complete the hold-short requirement; if wind shear could occur, the margin to stop short could be compromised, so that scenario is not accepted for LAHSO.

The other options aren’t part of the LAHSO weather acceptance criteria: winds from a specific direction isn’t a standard weather constraint used to decide LAHSO eligibility, whether thunderstorms are within a certain distance isn’t the stated criterion, and whether the optimized approach speed is achieved is a performance factor, not a weather constraint used in LAHSO acceptance.