Briefly describe the scope and type(s) of discovery available (e.g., depositions, interrogatories, etc.):
In cases concerning formal complaints against common carriers, a complainant or defendant may file with the Commission and serve on the opposing party, a request for up to ten written interrogatories. The Commission may modify existing discovery or allow additional discovery, including, but not limited to, document production, depositions and/or additional interrogatories. 47 C.F.R. § 1.729.