In this NPRM, in WT Docket No. 10-88, the Commission seeks comment on revisions to part 17 of the Commission's rules governing construction, marking, and lighting of antenna structures. The Commission initiated this proceeding to update and modernize the part 17 rules. These proposed revisions are intended to improve compliance with these rules and allow the Commission to enforce them more effectively, helping to better ensure the safety of pilots and aircraft passengers nationwide. The proposed revisions would also remove outdated and burdensome requirements without compromising the Commission's statutory responsibility to prevent antenna structures from being hazards or menaces to air navigation.