Attorney Ben Hagood will step down from Charleston County Aviation Authority Dec. 31, board chairman Andy Savage said Friday. No reason was given.

Hagood serves as the proxy for Sen. Chip Campsen of Charleston, who as chairman of the Charleston County legislative delegation has a seat on the board. Campsen does not believe the law that placed him on the board is constitutional and sends a proxy in his place. A lawsuit challenging the law is currently on appeal.

Campsen has not named a replacement to the 13-member board. Savage said he expects Campsen to name a new proxy by the end of the year.

The Aviation Authority will also gain another new member. The House delegation will vote Monday on one of seven candidates to replace Michael Stavrinakis, who plans to step down in February after accepting a seat on the board of the Medical University of South Carolina.

Reach Warren L. Wise at 937-5524 or twitter.com/warrenlancewise.