Matches in DBpedia 2014 for { ?s ?p The Pitcairn OP (manufacturer designation: PCA-2) was the first rotary-wing aircraft to be seriously evaluated by any of the world's major air forces. The machine was not a helicopter, nor an airplane, but an autogyro. Pitcairn's model was never put into production for any military.. }
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- Pitcairn_OP abstract "The Pitcairn OP (manufacturer designation: PCA-2) was the first rotary-wing aircraft to be seriously evaluated by any of the world's major air forces. The machine was not a helicopter, nor an airplane, but an autogyro. Pitcairn's model was never put into production for any military.".
- Pitcairn_OP comment "The Pitcairn OP (manufacturer designation: PCA-2) was the first rotary-wing aircraft to be seriously evaluated by any of the world's major air forces. The machine was not a helicopter, nor an airplane, but an autogyro. Pitcairn's model was never put into production for any military.".