Due to a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted.
Air traffic control facilities and equipment requirements to meet the needs of the 1970's : fifth report by the Committee on Government Operations, 92d Congress, 1st session
Air traffic control facilities and equipment requirements to meet the needs of the 1970's : fifth report by the Committee on Government Operations, 92d Congress, 1st session