241. Federal aviation regulations: Part 43, Maintenance, preventive maintenance, rebuilding, and alterations. Bookmark SuDoc number: TD 4.6:43
242. Federal aviation regulations: Part 61, Certification, pilots and flight instructors. Bookmark SuDoc number: TD 4.6:61
243. Federal aviation regulations: Part 63, Certification, flight crewmembers other than pilots. Bookmark SuDoc number: TD 4.6:63
244. Federal aviation regulations: Part 65, Certification, airmen other than flight crewmembers. Bookmark SuDoc number: TD 4.6:65
245. Federal aviation regulations: Part 91, General operating and flight rules. Bookmark SuDoc number: TD 4.6:91
246. Federal aviation regulations: Part 93, Special air traffic rules and airport traffic patterns. Bookmark SuDoc number: TD 4.6:93
247. Federal aviation regulations; Part 1, Definitions and abbreviations. Bookmark SuDoc number: TD 4.6:1
248. Federal aviation regulations; Part 103, Transportation of dangerous articles and magnetized materials. Bookmark SuDoc number: TD 4.6:103
250. Federal aviation regulations; Part 121, Certification and operations, domestic, flag, and supplemental air carriers and commercial operations of large aircraft. Bookmark SuDoc number: TD 4.6:121