Climb out at Vx. This may not be practical in all aircraft so refer to your pilot operating handbook (POH).
Reduce propeller revolutions per minute (RPM) as soon as safe and practical.
FAR 91.119 Minimum Safe Altitudes Except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes:
Anywhere. An altitude allowing, if a power unit fails, an emergency landing with undue hazard to persons or property on the surface.
Helicopters. Helicopters may be operated at less than the minimums prescribed in this section if the operation is conducted without hazard to persons or property on the surface. In addition, each person operating a helicopter shall comply with any routes or altitudes specifically prescribed for helicopters by the administrator.
Over areas other than congested areas. There must be an altitude of 500 feet above the surface, except over open water or sparsely populated areas. In those cases, the aircraft may not be operated closer than 500 feet to any person. vessel, vehicle, or structure.
Over congested areas. Over any congested area of a city, town, or settlement, or over any open air assembly of persons. There must be an altitude of 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet of the aircraft.
Thank you for your cooperation. Safety always supersedes noise abatement procedures.