Definition
The highest power setting the engine and propeller combination is certified to produce, applied by smoothly advancing the throttle (and propeller and mixture controls as required) to their full forward positions within published limits. In stall recovery, maximum power is used to minimize altitude loss and accelerate the aircraft away from the stalled condition.
Plain English
The most power the engine is allowed to make. You get it by smoothly pushing the throttle all the way forward, along with the prop and mixture controls if your aircraft has them.
Context Anchor
Seen in stall-recovery procedures, where the pilot adds power as the airplane nears a stall to help stop the descent and return to normal flight.
Derivation
Maximum comes from the Latin maximus, meaning “greatest.” Power means the ability to do work or produce force. Together, maximum power means the greatest usable engine force available for the situation.
Why Pilots Care
Prompt application of maximum power during stall recovery accelerates the wing, reduces the angle of attack, and limits altitude loss.
Intuition Check
Maximum power does not mean “do anything for more speed.” It means using the greatest engine power setting that is allowed and controllable in that airplane at that moment.
Example Sentence 1
At the first indication of a stall, the pilot lowered the nose and applied maximum power to recover with minimum altitude loss.
Example Sentence 2
In coordinated turning stalls, maximum power is applied right after the nose is lowered to help the airplane accelerate and climb away safely.