I haven't seen this yet but I have watched a good portion of the episodes of Air Disasters on Paramount+ and the scariest episodes are the ones where either a pilot or another employee that is mental takes the plane down.
I was shocked at how many times that has occurred. There was one where an employee fired for stealing the cash from the drink cart took revenge on his supervisor by taking down the entire plane the supervisor was riding on. Another with a crazed FedEx pilot riding in the jump seat brought a bunch of hammers on board and beat the pilots and flight engineer to near death with hammers before they subdued him. Another I think on an Indonesian airline the captain lost a ton of money in the Asian Stock Market and took down the plane full of people. To me these are scarier than the mechanical failures.