In emergency hydraulic extension, which order is correct?

• A. Extend the flaps first, then extend the landing gear
• B. Extend the landing gear before extending the flaps
• C. Extend both by pulling the flap handle
• D. Extend only the flaps and not the landing gear

Answer: (B)

In emergency hydraulic extension, the priority is to achieve a safe landing configuration with minimal reliance on pressurized hydraulics. Extending the landing gear first ensures the aircraft has wheels down and locked, which is essential for a controlled, safe approach and landing even when hydraulic pressure is limited. The gear system is designed to deploy via an alternate path or gravity, so you can get the airplane ready to land without waiting for full hydraulic power. After the gear is down, extending the flaps comes next to tailor the approach—providing more lift at lower speeds and helping with descent control. Extending flaps first could delay reliable gear deployment or complicate the approach if hydraulics are limited, so the gear is placed first and flaps follow.