What is one consequence if a crewmember does not complete their physical by the end of their birth month extension?

A crewmember must complete their physical examination by the end of their birth month to ensure they meet the health requirements for their role. If they fail to do so, one immediate consequence is that they will be grounded. This means they will not be allowed to perform flight duties or any operational responsibilities until they have successfully completed the necessary physical evaluation. This policy is in place to ensure safety in aviation operations, as the health and fitness of crewmembers are critical to maintaining a safe flying environment for both crew and passengers. Grounding serves as a necessary measure to prevent unfit individuals from taking part in flight duties until they are cleared medically.