The Causes of accident on aircraft have 3 causes. There are human error, mechanical failure and sabotage. In human error case solve in pilot and cabin crew. They often to get training. After that, they must be test. If they fail, they are retest. In mechanical failure case solve by engineer because they must check the equipment and parts of aircraft. They have to change the expire equipment. The last case is sabotage. They focus on the passengers. Staff have to check the passenger items. The items aren’t dangerous. In conclusion, Airline industry must have effective strategy planning. So, they can control and protect human error, mechanical failure and sabotage aren’t happen.