Pitcairn XO-61(公司型號PA-44和合約名稱MX-157[1])是一款由皮特凱恩飛機公司 設計的自轉旋翼機。作為最後生產的旋翼機之一,在與奇力 YO-60和R-4直升機的競爭中,它因後置發動機的冷卻問題以及具有懸停能力的直升機的出現而落選。[2][3]
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