Can any engineers tell me what the difference is between an automatic engine start and a manual engine start is. What actually is the difference with regards the mechanics of the aircraft systems and starting process. What is it that powers the engine for rotation.
Having to do a manual start if the outside temp is 40 degrees or above. How does doing a manual start differ from an automatic start to make this option more suitable. What's the mechanics of the system that makes it a better option.