Browse Items (395 total)

[Men looking at door of Learjet 23 prototype]
Photograph of two men looking at the door of the Learjet 23 prototype, February 18, 1964. A third man is visible inside the aircraft performing a test with an oscillograph.Inscription on verso: "Direct read out oscillograph loaned from Century…

[Learjet 23 prototype undergoing fuselage testing]
Photograph of the Learjet 23 prototype undergoing fuselage testing, February 18, 1964.Inscription on verso: "T58-2E / 2-18-64."

[Learjet 23 prototype undergoing fuselage down-bending test]
Photograph of the Learjet 23 prototype undergoing a fuselage down-bending test, February 18, 1964.Text on sign: "Fuselage down bending static test / 0% ultimate / 18 Feb. 1964."Inscription on verso: "T58-2-O / 2-18-64."

[Learjet 23 prototype undergoing fuselage up-bending test]
Photograph of the Learjet 23 prototype undergoing a fuselage up-bending test, February 13, 1964.Text on sign: "Fuselage up bending static test / 100% ultimate / 13 Feb. 1964."Inscription on verso: "T58-1-C / 2-13-64."

[Learjet 23 fuselage undergoing testing in hydrostatic tank]
Photograph of people observing a Learjet 23 fuselage undergoing testing in a hydrostatic tank, January 15, 1964. William P. Lear (in vest) is on the left.Typed caption on verso: "Meets FAA requirements: / Both fail-safe and ultimate fatigue tests…

[Brochure for Learjet 23 aircraft]
Brochure for the Learjet 23 aircraft, circa 1964. Contains photographs and information related to the aircraft's design, production, and testing.

[Audio recording of speech given by William P. Lear at Lear Jet employee banquet]
Audio recording of a speech given by William P. Lear at a Lear Jet employee banquet, 1964. Text on label: "Lear Jet 1964 employee banquet speech. Sept."

[Learjet 23 prototype at Lear facility]
Photograph of the Learjet 23 prototype at a Lear facility, September 10, 1963. Other aircraft undergoing construction and testing are visible in the background.Inscription on verso: "P 15-D / Sept. 10, 1963."

[Learjet 23 prototype at Lear facility]
Photograph of the Learjet 23 prototype at a Lear facility, September 10, 1963. Other aircraft undergoing construction and testing are visible in the background.Inscription on verso: "P 15-E / Sept. 10, 1963."

[People attaching tail section to Learjet 23 prototype]
Photograph of people attaching the tail section to the Learjet 23 prototype, September 9, 1963.Inscription on verso: "P 14-G / Sept. 9, 1963."
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