Airman Certification Standards
ACS AA.III.G
Confined Area Takeoff and Maximum Performance Climb (ASES, AMES)
Knowledge
Effects of atmospheric conditions, including wind, on takeoff and climb performance.
Appropriate power settings and V-speeds for takeoff and climb.
Appropriate airplane configuration.
Effects of water surface.
Available techniques for confined-area takeoff and climb.
Risk Management
Selection of the takeoff path based on airplane limitations, available distance, surface conditions, and wind.
Abnormal operations, including planning for:
a. Rejected takeoff
b. Potential engine failure in takeoff/climb phase of flight
Collision hazards.
Low altitude maneuvering, including stall, spin, or controlled flight into terrain (CFIT). 26
Distractions, task prioritization, loss of situational awareness, or disorientation.
Gear position in an amphibious airplane.
Skill
Coordinate with crew, if applicable, and complete the appropriate checklist(s) prior to takeoff in a timely manner.
Make radio calls as appropriate.
Position the flight controls for the existing wind, if applicable.
Verify the airplane is configured for takeoff.
Clear the area; select appropriate takeoff path considering surface conditions and collision hazards.
Retract the water rudders, as appropriate.
Set and confirm takeoff power.
Avoid excessive water spray on the propeller(s).
Maintain directional control and proper wind-drift correction throughout takeoff and climb.
Establish and maintain an appropriate planing attitude, directional control, and correct for porpoising, skipping, and increase in water drag.
Rotate and lift off at the appropriate airspeed, and accelerate to the recommended obstacle clearance airspeed or VX using appropriate bank angles to maintain terrain clearance, as needed.
Climb at the recommended airspeed or in its absence at best angle-of-climb speed (VX), +5/-0 knots until the obstacle is cleared, or until the airplane is 50 feet above the surface. In multiengine airplanes with VX values within 5 knots of minimum control speed (VMC), the use of best rate of climb speed (VY) or the manufacturer's recommendation is acceptable.
After clearing all obstacles, accelerate to VY ±5 knots.
Retract flaps and adjust power as needed to maintain VY or appropriate climb airspeed, ±5 knots to a safe maneuvering altitude.
Follow noise abatement procedures, as practicable.
Retrieved from ecfr.gov on July 17, 2026.