Browse Items (97 total)

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."

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."

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."

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

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

Photograph of people attaching the wing to the Learjet 23 prototype, August 8, 1963.Inscription on verso: "P6-B / Aug. 8, 1963 / Mating and attaching wing to fuselage."

Photograph of people attaching the aft and forward fuselage sections of the Learjet 23 prototype, July 31, 1963. Inscription on verso: "P5-H / July 31, 1963 / Attaching aft fuselage section to forward fuselage section."

Photograph of the fuselage of the Learjet 23 prototype, July 31, 1963. Inscription on verso: "P5-E / July 31, 1963 / Showing aft section joined onto forward fuselage."

Photograph of a man working on the wing section of the Learjet 23 prototype, July 25, 1963. The forward fuselage section is visible in the background.Inscription on verso: "P3-E / July 25, 1963."

Photograph of the wing section of the Learjet 23 prototype, July 23, 1963. Inscription on verso: "P2-A / July 23, 1963 / 8 spars - count 'em for strength far beyond part 3 and part 4B flite [sic] requirements plus fail safe construction due to multi…