When do slats extend to 25?

When do slats extend to 25?

• A. Flaps 30
• B. Flaps 45
• C. Flaps 20
• D. Flaps 60

Answer: (A)

Leading-edge slats are part of the high‑lift system and their position is coordinated with the trailing-edge flap setting. On the CRJ‑550, the slats reach their full 25-degree extension when the trailing-edge flaps are set to thirty degrees. This combination provides the extra lift and lower stall speed needed for takeoff and landing configurations. Other flap settings produce different slat angles or configurations, so the 25-degree slat extension is specifically tied to the flaps at thirty.

Leading-edge slats are part of the high‑lift system and their position is coordinated with the trailing-edge flap setting. On the CRJ‑550, the slats reach their full 25-degree extension when the trailing-edge flaps are set to thirty degrees. This combination provides the extra lift and lower stall speed needed for takeoff and landing configurations. Other flap settings produce different slat angles or configurations, so the 25-degree slat extension is specifically tied to the flaps at thirty.