47 CFR 17.45 - Temporary warning lights.

§ 17.45 Temporary warning lights.
During construction of an antenna structure, for which red obstruction lighting is required, at least two 116- or 125-watt lamps (A21/TS) enclosed in aviation red obstruction light globes, shall be installed at the uppermost point of the structure. The intensity of each lamp shall not be less than 32.5 candelas. In addition, as the height of the structure exceeds each level at which permanent obstruction lights will be required, two similar lights shall be installed at each such level. These temporary warning lights shall be displayed nightly from sunset to sunrise until the permanent obstruction lights have been installed and placed in operation, and shall be positioned so as to insure unobstructed visibility of at least one of the lights at any normal angle of approach. If practical, the permanent obstruction lights may be installed and operated at each required level as construction progresses.
[32 FR 11273, Aug. 3, 1967, as amended at 39 FR 26157, July 17, 1974; 42 FR 54826, Oct. 11, 1977]
Beta! The text on the eCFR tab represents the unofficial eCFR text at ecfr.gov.

This section’s status may have changed. It may have been renumbered, reserved, or removed.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code
Statutes at Large

Title 47 published on 2014-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR Part 17 after this date.

  • 2015-07-01; vol. 80 # 126 - Wednesday, July 1, 2015
    1. 80 FR 37552 - Amendments To Modernize and Clarify the Commission's Rules Concerning Construction, Marking and Lighting of Antenna Structures
      GPO FDSys XML | Text
      Final rule; announcement of effective date.
      Amendments to 47 CFR 17.4, 17.48 and 17.49, published at 79 FR 56968, September 24, 2014, are effective on July 1, 2015.
      47 CFR Part 17