216.71—Who is eligible for a child's annuity.
         An individual is eligible for a child's annuity if the individual:
    
    
        
        (a) 
         Is a child of an employee who has completed 10 years of railroad service and had a current connection with the railroad industry when he or she died;
    
    
    
    
    
    
    
        
        (i) 
         Is disabled as defined in  part 220 of this chapter before attaining age 22 (the disability must continue through the time of application for benefits);
    
    
    
        
        (iii) 
         Becomes age 19 in a month in which he or she is a full-time student and has not completed the requirement for, or received a diploma or certificate from, a secondary school.