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Ordnance Engineering Corporation. This was a 4-plane biplane with 150 [[crossed-out]] H.P. [[/crossed-out]] h.p. Hispano engine designed by Walter Phipps. 

From 1928 to 1930 Albert was Chief Engineer for the Aeromarine-Klemm Corporation, and in 1930 also wrote articles for "Aviation" Magazine. In 1930 he became Research Engineer for the Bendix Research Corporation, where he remained until 1933. 

Arthur Heinrich again became an active aero-modeler and in the 1920's engaged in model flying contests. [[crossed-out]] This led to his [[/crossed out]] He later [[crossed-out]] becoming [[/crossed-out]] became a professional precision model maker for Grumman Aircraft Company in connection with their wind tunnel tests. Following this Arthur remained with Grumman on inspection work until his retirement.
 
Arthur O. Heinrich passed away suddenly on September 14 [[crossed-out]] th [[crossed-out]], 1958, at his home in Baldwin, Long Island. [[crossed-out] and [[crossed-out]] He was honored by a remembrance, "Arthur O. Heinrich Day," by the Long Island Early Flyers Club on October 5[[crossed-out]] th [[/crossed-out]], 1958, at the Officers Club, Suffolk County Air Force Base. 

Albert Heinrich [[crossed-out]] is now living in [[/crossed-out]] retired [[crossed-out]] retirement at [[/crossed-out]] to Fort Ashby, West Virginia. He was awarded the General Aeroplane Efficiency Award by the Municipal Engineers of New York in 1914 and the United States War Department Certificate of Merit in 1919, and [[crossed-out]] is [[/crossed-out]] was an active member of the Early Birds.
 
On April 19, 1959, the Early Birds dedicated a plaque to honor the Heinrich brothers at unveiling ceremonies at the Plaza School Building in Baldwin, Long Island. This fitting memorial was erected in the lobby of the school which is located on the site of their early aviation ventures. 

It is recorded that from the very beginning Heinrich [[crossed-out]] aeroplanes [[/crossed-out]] airplanes always combined sound engineered judgement and advanced design for their era. The workmanship and construction were always superb as they abhorred slipshod methods and maintenance. Every plane they built was a success. Self-taught, the Heinrich brothers both became expert pioneer aviators as well as designers and builders[[crossed-out]].[/[crossed-out]], [[crossed-out]] and [[/crossed-out]] Early American aviation history must well record their accomplishments in materially helping to [[crossed-out]] mold [[/crossed-out]] found the great industry aviation has become today. 

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