CAT II approach flap setting required?

CAT II approach flap setting required?

• A. Flaps 1
• B. Flaps 3
• C. Flaps 5
• D. Flaps 7

Answer: (C)

CAT II approaches require a stabilized, low-speed configuration that still provides enough lift for a safe, controlled approach with autopilot guidance. On the ERJ 175, the published CAT II approach setup uses flaps five. This setting gives the airplane the lift needed to fly a slow, stable approach without excessive drag, which helps the autopilot maintain the localizer and glideslope reliably down to the decision altitude. Flaps set to a lighter position (one or three) don’t provide enough lift at the lower speeds required, risking a higher approach speed and reduced stability. Flaps set to seven adds too much drag and can compromise the approach profile and performance near the minimums. So, flaps five is the standard, appropriate configuration for CAT II approaches on this aircraft.

CAT II approaches require a stabilized, low-speed configuration that still provides enough lift for a safe, controlled approach with autopilot guidance. On the ERJ 175, the published CAT II approach setup uses flaps five. This setting gives the airplane the lift needed to fly a slow, stable approach without excessive drag, which helps the autopilot maintain the localizer and glideslope reliably down to the decision altitude. Flaps set to a lighter position (one or three) don’t provide enough lift at the lower speeds required, risking a higher approach speed and reduced stability. Flaps set to seven adds too much drag and can compromise the approach profile and performance near the minimums. So, flaps five is the standard, appropriate configuration for CAT II approaches on this aircraft.