1. "VFS Electric VTOL Directory Hits 900 Concepts," Electric VTOL News by the Vertical Flight Society, 10Oct. 2023, URL: https://evtol.news/news/vfs-electric-vtol-directory-hits-900-concepts [retrieved 4 December 2023].
2. Handling qualities and pilot evaluation
3. "First Navy V-22 Arrives in Patuxent River," NAVIAR News, 5Feb. 2020, URL: https://www.navair.navy.mil/news/First-Navy-V-22-arrives-Patuxent-River/Wed-02052020-1141 [retrieved 3 December 2023].