Definition
A propeller constructed from solid metal, typically aluminum alloy, with fixed blades machined or forged into shape. It is the traditional propeller design used on most general aviation airplanes and serves as the baseline against which other propeller types (such as composite propellers) are compared.
Plain English
The standard, all-metal propeller you see on most light airplanes — solid aluminum blades, no composite materials, no unusual design features.
Context Anchor
A pilot encounters this term during the outside inspection of the airplane, especially while checking the propeller blades for nicks, cracks, bends, or corrosion before flight.
Derivation
Conventional' comes from the Latin convenire, meaning 'to come together' or 'to agree.' Over time it came to mean 'the accepted or standard way of doing something.' Here it simply means the propeller type that has long been the industry standard.
Why Pilots Care
Conventional metal propellers are durable but vulnerable to nicks, cracks, and corrosion. Small damage can create stress points that lead to blade failure, so careful preflight inspection is essential.
Intuition Check
Conventional does not mean old-fashioned or damage-proof. Here it means the common metal type of propeller, not a guarantee that the propeller is simple, safe to touch, or free from inspection concerns.
Example Sentence 1
During preflight, the pilot ran a hand along the conventional metal propeller, feeling for any nicks or rough edges that could indicate damage.
Example Sentence 2
Check the conventional metal propeller blades for damage before every flight.