Tags: Aircraft.
The Harmon Der Donnerschlag (English: Thunderclap) is an American homebuilt aircraft that was designed and produced by Harmon Engineering of Howe Texas. The aircraft was intended for amateur construction.
Tags: Aircraft.
The Harmon Der Donnerschlag (English: Thunderclap) is an American homebuilt aircraft that was designed and produced by Harmon Engineering of Howe Texas. The aircraft was intended for amateur construction.
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