climbout

Climbout, also written climb-out, is a term in aviation describing the initial phase of flight after takeoff, from liftoff to the point where the aircraft reaches a prescribed altitude or is established on a stable climb path. It encompasses adherence to departure procedures, air traffic control instructions, and aircraft performance limits.

In practice, the climbout begins with rotation and liftoff, followed by the retraction of landing gear and flaps and the establishment of a positive rate of climb. The aircraft then accelerates to the appropriate climb speed and meets the assigned altitude and climb gradient. The specifics depend on factors such as aircraft type, weight, weather, runway characteristics, and obstacle clearance.

Operational considerations include obstacle clearance and compliance with departure procedures, which define required climb gradients and initial routing. Performance charts in the aircraft’s flight manual specify the needed speeds, configurations, and power settings. Noise abatement procedures may influence the climbout path, and pilots coordinate with air traffic control to ensure a safe and efficient ascent.

Climbout is a standard topic in flight training and is documented in aircraft operating manuals, departure procedures published by aviation authorities, and airline standard operating procedures. Effective climbout performance is essential for a safe transition from takeoff to en route flight.