JS1408: Proposal for Certification Test of a Beech C-90 King Air with a Dual Autopilot and Flight Director System, 1990-05-14, Box: 16, Folder: 7. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766939 Accessed June 14, 2026.