The Secretary of Transportation shall prescribe regulations on standards for installing navigational aids, including airport control towers. For each type of facility, the regulations shall consider at a minimum traffic density (number of aircraft operations without consideration of aircraft size), terrain and other obstacles to navigation, weather characteristics, passengers served, and potential aircraft operating efficiencies.
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| Revised Section | Source (U.S. Code) | Source (Statutes at Large) |
|---|---|---|
| 44719 | 49 App.:1348 (note). | Dec. 30, 1987,
|
The words "Not later than December 31, 1988" are omitted as obsolete.