airliner with 3 piston-propeller engines (Q19058890)
aircraft class designed for commercial aviation duties powered by 3 reciprocating propulsion engines driving propellers
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aliases tri-prop piston airliner
 tri-engine piston airliner
 three-engine piston airliner
 trimotor airliner
description aircraft class designed for commercial aviation duties powered by 3 reciprocating propulsion engines driving propellers