Cfr part 139 July 8, 2019 16 32 64 128 Cfr part 139.321 14 cfr part 139 14 cfr part 139 pdf 14 cfr part 139 subpart d 14 cfr part 139 subpart e 14 cfr part 139.325 14 cfr part 139.337 14 cfr part 139.319 21 cfr part 139 14 cfr part 139 section 321 45 cfr part 1397 14 cfr part 139.303 14 cfr part 139.317