Aviation

Has anyone went to aviation school and learned to fly a helicopter? What was the hardest part? Is there any safety concern or safety measures that are taken since it only has one engine?

This is the story of United Airlines flight 1175 from San Francisco to Honolulu, Hawaii. A perfectly smooth flight… followed seconds later by a violent explosion, an almost uncontrollable aircraft…and vibrations…. So many vibrations… Whatever caused this, wasn’t described in any manual.. and as the aircraft started pitching down, the pilots knew that there was only a cold, wavy ocean below them.

https://youtu.be/6yaEYs1rKak?si=rTtPes-J_XF_HdDU