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Sierradyne

Sierradyne was the name adopted after 1953 by Acme Aircraft Co, an aircraft manufacturer founded by Hugh Crawford and Roger Keeney in Torrance, California.

Last updated September 26, 2026

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Overview

Sierradyne is the name under which Acme Aircraft Co, an American aircraft manufacturer, was known after 1953. The company was founded by Hugh Crawford and Roger Keeney and was based in Torrance, California. As an aircraft manufacturer, its business centered on the design and production of aircraft, placing it within the aerospace and defense industrial sector of the United States. The surviving record of the enterprise is brief: the available evidence establishes its founders, its location in Torrance, California, and the 1953 change of name to Sierradyne, but does not detail its aircraft models, production volumes, ownership changes, or eventual fate. The brand therefore represents a mid-twentieth-century American aircraft maker whose corporate identity shifted from Acme Aircraft Co to Sierradyne in the early 1950s.

History

Acme Aircraft Co was an aircraft manufacturer founded by Hugh Crawford and Roger Keeney in Torrance, California. The company operated as an aircraft maker based in that Southern California city. After 1953 the company was known as Sierradyne, marking a change in its corporate name from Acme Aircraft Co to Sierradyne. Beyond these facts — the founders, the Torrance, California base, and the post-1953 name — the available evidence does not record the company's founding year, the aircraft it built, its customers, its ownership, or the date and circumstances of any later dissolution or acquisition.

  • Acme Aircraft Co founded by Hugh Crawford and Roger Keeney in Torrance, California.

  • After 1953 the company became known as Sierradyne.

Products and positioning

Product categories. Aircraft

Sources1 sources

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