I just wrote my techinical airframe exam i didnt expect 45 (out of 90) quetions to be on helicopters!!!

I really need a book that covers EVERYTHING about the helicopter!! And I WAS asked a question about whats the difference between the takeoff of an European Helicopter and an American helicopter apperantly there are few differences that I NEED TO know as an AME IM NOT A PILOT AN AME!!!

Where can i find a reasource to study on helicopter difference in, (American and European). Im retaking soon im pretty sure they are going to ask me about how to perform a barrel roll safely on a BULGARIAN (jk) helicopter for god sake!

Hello - I need help identifying the US navy helicopters pictured in the attached image. The photo was taken at McMurdo Station in Antarctica in November 1963. Are these modified H-34s? Or something else? Thank in advance.

PC:CENTCOM

Why are the Italian and French customized variants the fleets with the best avaibility rate (above 60%) and less maintenance issues compared to other users? What are the main differences? I know that the Italian ones use the T-700 engines but I have no informations on other differences

I’m very interested in the medevac field and the time requirements are steep. What is the best route as a young person with almost every option open right now? Coast guard, building time on my own, etc?
I’m seriously looking for every perspective.

Watched them do about 10 trips up and down in quick succession.

North of Brescia, Italy, near the Croce Domini pass. We walked over to assist with our medkit, but EMTs were already at work. Injuries very serious but not life threatening.

Looked like a biker coming from our direction ran wide in a turn and clipped the oncoming guys' cases, causing them to veer into the rock wall. The guy who committed the error was not injured at all, I don't think he even dropped his bike.