JS1434: FAA Approved Airplane Flight Manual Supplement for Douglas Model DC-8-61 Airplanes Equipped with QNC Plus Acoustic Treatment and Increased Maximum Zero Fuel and Landing Weights and Flap 25-Degree Switch, 1992-03-31, Box: 16, Folder: 28. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766960 Accessed June 15, 2026.