If there is an accident by plane and no one knows about it, will the insurance company contact the family members by itself?

The plane is not very clear, it should be similar to the advanced class passengers. There will be an insurance policy for you when you take a senior passenger. Similarly, planes should also have them. Such a personal accident insurance policy is equivalent to an insurance contract. Such an insurance policy should have a receipt, and it can only take effect if it is torn up and put in a fixed box and taken back by the insurance company, but usually no one realizes this, so it can be said that the insurance when we take a high-class passenger can be said to be an invalid contract. This is a theoretical statement, but in real life, I think when the conductor swipes your ID card, your information has already been entered into the computer, and you should also mark whether you buy insurance or not. Therefore, in the event of an accident, the insurance company should still compensate.