Final answer:
When the pilot increases the propeller speed in a constant speed propeller system, she puts the propeller governor into a temporary condition known as overspeed.
Step-by-step explanation:
When the pilot of an airplane using a constant speed propeller in stabilized cruise mode wants to climb and moves the blue lever to increase the propeller speed, she puts the propeller governor into a temporary condition known as overspeed. Overspeeding occurs when the propeller speed exceeds the designed maximum limit.