Hiller UH-12s were converted from piston engines to Allison Model 250-C20 turboshaft engines rated at 400 hp by Soloy Conversions Ltd., Chalis, Washington. From Vertiflite, November/December 1975 (page 22).
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Allison 250 being installed in Hiller UH-12

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Hiller UH-12s were converted from piston engines to Allison Model 250-C20 turboshaft engines rated at 400 hp by Soloy Conversions Ltd., Chalis, Washington. From Vertiflite, November/December 1975 (page 22).

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Added to Vertiflite Images and categorized in — 7 years ago

 

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