Browse Items (2 total)
- Subject is exactly "Instrument landing systems"
[William P. and Moya Olsen Lear Papers, Box 34, Folder 1 - "Lear low approach system (31-1 and 31-3)," 1939 December]
![[William P. and Moya Olsen Lear Papers, Box 34, Folder 1 - "Lear low approach system (31-1 and 31-3)," 1939 December]](https://digitalcollections.museumofflight.org/files/square_thumbnails/7b98b8079646d014b0103ec09a362209.jpg "[William P. and Moya Olsen Lear Papers, Box 34, Folder 1 - "Lear low approach system (31-1 and 31-3)," 1939 December]")
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…
[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]](https://digitalcollections.museumofflight.org/files/square_thumbnails/524a75873758bf9b9cdf4e4101a5c6ee.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]")
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.