839.1302—What types of decisions can I appeal?
        
        (a) 
         You can appeal to the MSPB a decision that affects your rights and interests under this part, except an OPM decision under subpart L (see  § 839.1303 ). Some examples of decisions are:
    
    
    
        
        (2) 
         Your employer's determination that you are not eligible to elect retirement coverage under these rules; and
    
    
    
        
        (b) 
         You may not seek review of a decision under any employee grievance procedures, including those established by chapter 71 of title 5, United States Code, and  5 CFR part 771.