HPK SP-1 | |
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Role | Homebuilt aircraft |
National origin | United States of America |
Manufacturer | HPK Aircraft Associates, a division of Engle Flying Service, Inc. |
Designer | Harold Hayden, Art Payne, Robert Kinney, Norman R. Benner |
First flight | 23 August 1957 |
Introduction | 1957 |
Number built | 1 |
The HPK SP-1 aka "Some Pisser-1" is a single seat homebuilt aircraft.[1]
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Engle Flying Service members, Harold Hayden, Art Payne, Robert Kinney, and Norman R. Benner developed the HPK SP-1 over the course of five years. Plans for a two seat side by side, and four seat variants were not completed.[2]
The SP-1 is a single-place, all-metal, low-wing aircraft with conventional landing gear and partial span split trailing edge flaps. The cowling is from a Piper Tri-Pacer.[3]
The aircraft was built and tested at Three-M airfield in Pennsylvania, home of Kaiser-Fleetwings Company.[4] The prototype has been registered for over 50 years.[5]
Data from sport aviation
General characteristics
Performance
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