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• Subject > Aids to air navigation (remove)
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• Format > notes (documents) (remove)

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• Mixed Materials (5)
• Text (1)

• notes (documents) (6)
• drawings (4)
• correspondence (1)
• diagrams (1)

• In copyright (6)

• Aids to air navigation (6)
• Instrument landing systems (2)
• Lear Developments (2)
• Lear Avia Corporation (1)
• Lear Avia, Inc. (1)
• Lear, William P. (William Powell), 1902-1978 (1)
• Radio direction finders (1)

6 results

[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August] (Item)

Items from Box 4, Folder 27 of the William P. and Moya Olsen Lear Papers, August 1939. Includes eight pages of handwritten notes and sketches related to "Blind approach by voice," an airplane landing system.

[William P. and Moya Olsen Lear Papers, Box 34, Folder 1 - "Lear low approach system (31-1 and 31-3)," 1939 December] (Item)

Items from Box 34, Folder 1 of the William P. and Moya Olsen Lear Papers, December 1939. Contains handwritten notes and sketches about the Lear low approach system. All or most of the notes appear to have been written by William P. Lear. Five total documents.

[William P. and Moya Olsen Lear Papers, Box 34, Folder 6 - "Bill Lear ideas and cases," 1940 January - 1944 March] (Item)

Items from Box 34, Folder 6 of the William P. and Moya Olsen Lear Papers, January 1940 - March 1944. Contains an assortment of handwritten notes and sketches made by William P. Lear detailing various invention ideas. Some of the sketches depict circuit diagrams. Seven total documents.

[William P. and Moya Olsen Lear Papers, Box 20, Folder 5; Box 205, Folder 3 - "Remote control apparatus (WPL)" -- correspondence, notes, and sketches [L-D-50], 1942 July - 1943 May] (Item)

Items from Box 20, Folder 5 and Box 205, Folder 3 of the William P. and Moya Olsen Lear Papers, July 1942 to May 1943. Contains correspondence, notes, and sketches created by William P. Lear related to a remote control apparatus. Four total items and original folder labeled "Remote control apparatus WPL / L-d-50."

[William P. and Moya Olsen Lear Papers, Box 4, Folder 23; Box 200, Folder 1; Box 209, Folder 1 - ADF-6 and ADF-7 -- notes and diagrams [RM files], 1939 February - 1940 March] (Item)

Items from Box 4, Folder 23; Box 200, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, February 1939 to March 1940. Contains notes and diagrams related to ADF-6 and ADF-7 automatic direction finders. 11 total items.

Learadio notes on direction finding! (Item)

Notes written by William P. Lear about the utility of automatic direction finders, circa 1940. Describes a flight from New York to Dayon, Ohio in Lear's Waco aircraft and how a Lear ADF-8 helped him navigate despite static from a thunderstorm. Includes an inscription on page 1 from Lear. Two typed pages.Inscription: "I thought you might be interested in this. --Bill Lear."