If the commander is taking termination action against you, what type of appeal do you have and can you still participate in CAP activities during the appeal?

Appeal procedures are covered in SECTION D - APPEAL PROCEDURES  of  CAPR 35-3

A member is automatically considered in suspended status upon notification of membership termination proceedings under CAPR 35-3, Membership Termination. The suspension is effective until the termination process is complete including appeal periods. Members in suspended status are prohibited from attending meetings, participating in CAP activities, wearing the CAP uniform or otherwise exercising the privileges of membership. A suspended member must also turn in his/her membership card to the unit commander for the duration of the suspension.

You should also reference CAPR 35-3, paragraphs 9 and 10; as well as CAPR 35-1, paragrpah 2-2.