SPHAIR – talents for the sky (bis Mitte 2003 FVS(Fliegerische Vorschulung)) ist eine Ausbildungsplattform der Schweizer Luftwaffe. (Wikipedia)

Die brtische Royal Air Force hat auch ihr Schulungsmaterial kostenlos veröffentlicht. Als Lizenz allerdings "Crown Copyright" (keine Ahnung was das im Detail ist) - aber von daher gehe ich mal davon aus, dass du es nicht als Ressource für eigene Publikationen nutzen kannst:

• AP3456 The Central Flying School (CFS) Manual of Flying - Introduction
• Information regarding the latest version of AP3456 the RAF’s Manual of Flying
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 1 The Principles of Flight
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 2 Aircraft Performance
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 3 Propulsion
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 4 Aircraft System
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 5 Flight Instruments
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 6: Aviation Medicine
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 7: Avionics
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 8: Aircraft Operations
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 9: Navigation
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 10: Meteorology
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 11: Radar
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 12: Helicopter
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 13: Maths and Physics
• AP3456 The Central Flying School (CFS) Manual of Flying: Volume 14: Electronics

Quelle: https://www.gov.uk/government/publications/foi-responses-released-by-mod-week-commencing-13-january-2020

Der Vollständigkeit halber noch das beste Material ever...

https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/airplane_handbook

https://www.faa.gov/regulations_policies/handbooks_manuals/aviation