JS1461: Rotorcraft Flight Manual Substantiation for the Boeing 234 UT and LR Model Helicopter Operated Under Category B and for Normal Category A Takeoffs above 5400 Feet Density Altitudes, 1993-08-26, Box: 17, Folder: 13. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766983 Accessed June 14, 2026.