What is the Maximum Gear Down and Locked Speed?

What is the Maximum Gear Down and Locked Speed?

• A. 215 Knots
• B. 218 Knots
• C. 220 Knots
• D. 225 Knots

Answer: (C)

The main idea here is understanding the limit for extending and locking the landing gear. The gear-down-and-locked speed is the highest indicated airspeed at which the landing gear can be extended and fully locked without risk of an improper lock or structural stress on the gear mechanism and doors. For the CRJ-550, that limit is 220 knots. Extending the gear at or below this speed gives the system enough time and air-load margin to complete the extension and locking sequence safely. Speeds below this value (like 215 or 218) are still within the safe range, but they’re not the maximum. Going above this limit (like 225) would exceed the published maximum for normal gear extension and could lead to issues. That’s why 220 knots is the correct choice.

The main idea here is understanding the limit for extending and locking the landing gear. The gear-down-and-locked speed is the highest indicated airspeed at which the landing gear can be extended and fully locked without risk of an improper lock or structural stress on the gear mechanism and doors. For the CRJ-550, that limit is 220 knots. Extending the gear at or below this speed gives the system enough time and air-load margin to complete the extension and locking sequence safely. Speeds below this value (like 215 or 218) are still within the safe range, but they’re not the maximum. Going above this limit (like 225) would exceed the published maximum for normal gear extension and could lead to issues. That’s why 220 knots is the correct choice.