11:30 a.m.

This is interesting, there's a few noises that a plane makes when you take off. I have always wondered, but never knew why. I think small children, it would be great to tell them about this. As they must be freaking out why there's noises. So, from what I gather, there's a few noises:

1. The plane's wheels or landing gear are actually right below the pilot's cockpit in the front and below the wings of the plane. So, you feel vibrations and might hear some noise. This is when you take off, the wheels are retracting or extending.

2. There's a beep or alert, chime, to indicate this. There's another one, then this means the cabin crew can walk around. I think. There could be a 3rd chime, this is when the auto pre-designated thrust used to climb the aircraft, is altered. This may not always happen.

3. There's another noise where the engine may open up, then use reverse thrust, this is to help slow down an aircraft or to help break. This is to help when landing. This is an interesting one to listen for, doesn't always happen.

4. When taxiing in the runway, some Airbus planes, A330, they may use hydraulics mechanisms with an onboard plane computer system. This is to divert power, or otherwise, to save energy. I don't know. It doesn't happen always.

It's very interesting.