Consider the Condition
Nowadays, if captain Key were to try and become a pilot, or join the Air Force, with a preexisting heart condition, he would be politely asked to walk away. Additionally, his co-pilot would have never gotten off of the ground in the cockpit. Regulations are much more strict nowadays, and even back then this shouldn't have happened...
Addressing the Disaster
Instead of taking responsibility for the accident, British Airways temporarily rebranded themselves as British Airlines and avoided publicizing the incident. They fired all of their employees and rehired new crewmembers who had to go through massively different training than the prior staff did. The company also installed recording devices in the cockpits of all of their planes to monitor pilot interactions...