• Thumbnail for Spezio Tuholer
    The Spezio Sport DAL 1 Tuholer is a two-place low-wing homebuilt aircraft using tube-and-fabric construction. A folding wing is incorporated to allow for...
    8 KB (357 words) - 15:26, 19 October 2023
  • Ronald D. Freiberger, it was highly modified aerobatic variant of the Spezio Tuholer. Freiberger, a design engineer at General Motors and Rose-Hulman graduate...
    3 KB (279 words) - 17:41, 18 January 2022
  • MAT Sperry Sport Sperry Sportplane (Tony & Dorothy Spezio, Bethany, OK) Spezio Tuholer (a.k.a. Spezio Sport DAL-1) ((Siegmund) Spier Aircraft Corp, Jersey...
    10 KB (921 words) - 04:39, 24 August 2023