Can someone explain Exemption 3585? - Aviation Stack Exchange Exemption 3585 is an exemption to 14 CFR 121 dispatch requirements for weather originally requested by Peoples Express Lots of airlines have requested similar approval, and here is an example on regulations gov for Air Transportation International The exemption that they asked and were approved for was: an exemption from §§ 121 613, 121 619 (a), and 121 625 of Title 14, Code of Federal