Definition
The angle between the airplane's flight path and the horizontal during a climb. It expresses how steeply the airplane is gaining altitude relative to the ground covered, not how fast it is gaining altitude over time.
Plain English
How steeply the airplane is going up. A high angle of climb means the airplane is gaining a lot of height in a short horizontal distance.
Context Anchor
Seen in aircraft performance discussions, especially when choosing a climb after takeoff to clear obstacles.
Derivation
From Latin angulus (a corner) and climb from Old English climban (to ascend by gripping). Together they describe the slope of the upward path the airplane is tracing through the air.
Why Pilots Care
Directly affects whether the aircraft can clear obstacles after takeoff on short or obstructed runways.
Analogy
Think of walking up a ramp. A steeper ramp gains more height over the same floor distance. AOC is the airplane’s ramp angle through the air.
Grounding Statement
A greater AOC means the aircraft gains more height over the same ground distance.
Intuition Check
Do not confuse angle of climb with rate of climb. Angle of climb is steepness over distance; rate of climb is height gained over time.
Example Sentence 1
With tall trees off the departure end, the pilot used the best angle of climb speed to gain the most altitude before reaching them.
Example Sentence 2
Higher density altitude reduced the available angle of climb, requiring a longer runway or reduced weight for safe departure.