How Aeroplanes are tested?
The idea of testing is simple: try the stuff for it’s intended purpose. So that before you sell a light bulb to your customer, make sure it can be lit. And before you give air plane to customer, make sure it is safe to fly with.
Now many people might believe that flight simulators could prove good enough to test a plane, and you can easily guess that they are so wrong. the plane has to go certain hours of flight in certain conditions before it is delivered… yes, every one of them. Beyond that there are many tests to make sure it works in flight conditions it might face once in it’s life time, braking system, the load it can bear and so on.
Some one can start talking here that it is too expensive. Well it is, but is it more expensive than a plane crash with many causalities? Certainly not.
Now you can imagine, how far we should go to test software by making a call in terms of what is the expense of it’s testing comparing it to how expensive it can be if it fails. And such that we “try the stuff for it’s intended purpose”
To know more about how planes are tested, read and watch this: