What procedure is specified by CA.IV.A.S10 for water operation?

What procedure is specified by CA.IV.A.S10 for water operation?

• A. Retract the water rudders and establish the most efficient planing/liftoff attitude.
• B. Keep water rudders extended for stability on water.
• C. Use water rudders only during landing.
• D. Replace water rudders with wheels.

Answer: (A)

During water operations, the goal is to minimize drag while moving toward liftoff. Water rudders aid steering at low speed on the water, but they add hydrodynamic drag as speed increases and you’re trying to plane. CA.IV.A.S10 directs retracting the water rudders and establishing the most efficient planing/liftoff attitude. With the rudders stowed, the hull can plane more smoothly and reach liftoff sooner, improving acceleration and overall takeoff performance. The water rudders are then used when needed for steering on water or after becoming airborne, but not during the takeoff run.

During water operations, the goal is to minimize drag while moving toward liftoff. Water rudders aid steering at low speed on the water, but they add hydrodynamic drag as speed increases and you’re trying to plane. CA.IV.A.S10 directs retracting the water rudders and establishing the most efficient planing/liftoff attitude. With the rudders stowed, the hull can plane more smoothly and reach liftoff sooner, improving acceleration and overall takeoff performance. The water rudders are then used when needed for steering on water or after becoming airborne, but not during the takeoff run.