§ 47508. Noise standards for air carriers and foreign air carriers providing foreign air transportation
(a)
General Requirements.—
The Secretary of Transportation shall require each air carrier and foreign air carrier providing foreign air transportation to comply with noise standards—
(b)
Compliance at Phased Rate.—
The Secretary shall require each air carrier and foreign air carrier providing foreign air transportation to comply with the noise standards at a phased rate similar to the rate for aircraft registered in the United States.
(c)
Nondiscrimination.—
The requirement for air carriers providing foreign air transportation may not be more stringent than the requirement for foreign air carriers.