JS1063: Certification Flight Test Report Learjet Century III to Howard/Raisbeck Mark II Conversion Model 25D, 1980-01-28, Box: 4 , Folder: 28. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766579 Accessed June 14, 2026.