31.  Dismissal or Default for Failure to Prosecute or Defend

Whenever a record discloses the failure of either party to file documents required by these rules, respond to notices or correspondence from the Board, comply with orders of the Board, or otherwise indicates an intention not to continue the prosecution or defense of an appeal, the Board may, in the case of a default by the appellant, issue an order to show cause why the appeal should not be dismissed or, in the case of a default by the Government, issue an order to show cause why the Board should not act thereon pursuant to Rule 35. If good cause is not shown, the Board may take appropriate action.