Find your local airport and find out what airlines are based there or have maintenance hangers there. When I was in Year 10 I did work experience with an airline, it was amazing.
Some of the stuff I did:
- Inflate the emergency slide
- Change some screws on the side
- Test some pipes on the slide
- Removed bore scope plugs on engines (Not on the aircraft)
- Removed bore scope plugs on engines (Which were on the aircraft)
- Watched them bring a plane into the hangar twice(Which is pretty amazing to watch)
- Remove some bolts so we could remove the blades on the engine
- Tested the brake pressure by sitting in the cockpit and pushing the brakes (I didn't have anything to do, so I was looking at the aircraft and some guy asked me if I wanted to help him in the cockpit- Uh, Yeah!!!)
- Helped put the first class seats back together
- Helped out in the stock room
- Took a ride with someone to the hangar next door to collect a part (And I saw the new seats with the entertainment screens in)
That was all in four days. I'd loved to have stayed longer though!
--Edit- I just re-read the list. It might not seem amazing but it's better than it sounds.