What is the Max Gear Extended Altitude?

• A. 20,000'
• B. 15,000'
• C. 19,000'
• D. 18,000'

Answer: (D)

Max Gear Extended Altitude is the highest altitude at which the landing gear can be extended and remain reliably locked. This limit exists because the gear system relies on hydraulic power and safe sequencing; above this altitude, the available pressure and system performance may not be enough to fully extend and properly lock the gear. For this aircraft, that published limit is 18,000 feet, so extending gear above that altitude isn’t considered reliable. When planning approaches, you’d ensure gear is down and verified below or at this altitude, and you wouldn’t count on successful extension if you’re above it. The other numbers are outside the aircraft’s proven extension envelope, which is why they’re not the correct choice.