Title: Describe fixed-pitch propellers.
Course: Aircraft Pilot Training I (20053-I) > Section: Examining Aircraft Instruments, Components, Systems, and Performance

Description should include the following:

- A propeller with fixed blade angles is a fixed-pitch propeller.
- The pitch of this propeller is set by the manufacturer and cannot be changed.
- Since a fixed-pitch propeller achieves the best efficiency only at a given combination of airspeed and revolutions per minute (rpm), the pitch setting is ideal for neither cruise nor climb.
- It is a propeller with blades whose pitch can be adjusted on the ground with the engine not running, but which cannot be adjusted in flight.

PLT351