Interference with Flight Crew Member or Flight Attendant; Interference with

Dispatch, Navigation, Operation, or Maintenance of Mass Transportation Vehicle; Unsafe Operation of Unmanned Aircraft (a) Base Offense Level (Apply the greatest): (1) 30, if the offense involved intentionally endangering the safety of: (A) an airport or an aircraft; or (B) a mass transportation facility or a mass transportation vehicle; (2) 18, if the offense involved recklessly endangering the safety of: (A) an airport or an aircraft; or (B) a mass transportation facility or a mass transportation vehicle; (3) if an assault occurred, the offense level from the most analogous as- sault guideline, §§2A2.1–2A2.4; or (4) 9. (b) Specific Offense Characteristic (1) If (A) subsection (a)(1) or (a)(2) applies; and (B)(i) a firearm was dis- charged, increase by 5 levels; (ii) a dangerous weapon was otherwise used, increase by 4 levels; or (iii) a dangerous weapon was brandished or its use was threatened, increase by 3 levels. If the resulting offense level is less than level 24, increase to level 24. (c) Cross References (1) If death resulted, apply the most analogous guideline from Chap- ter Two, Part A, Subpart 1 (Homicide), if the resulting offense level is greater than that determined above. (2) If the offense involved possession of, or a threat to use (A) a nuclear weapon, nuclear material, or nuclear byproduct material; (B) a chem- ical weapon; (C) a biological agent, toxin, or delivery system; or (D) a weapon of mass destruction, apply §2M6.1 (Nuclear, Biological, and Chemical Weapons, and Other Weapons of Mass Destruction), if the resulting offense level is greater than that determined above. Commentary Statutory Provisions: 18 U.S.C. §§ 39B, 1992(a)(1), (a)(4), (a)(5), (a)(6); 49 U.S.C. §§ 46308, 46503, 46504 (formerly 49 U.S.C. § 1472(c), (j)). For additional statutory provision(s), see Appendix A (Statu- tory Index). Guidelines Manual (November 1, 2024) ║ 79 §2A5.3 Application Note: 1. Definitions.—For purposes of this guideline: “Biological agent”, “chemical weapon”, “nuclear byproduct material”, “nuclear mate- rial”, “toxin”, and “weapon of mass destruction” have the meaning given those terms in Ap- plication Note 1 of the Commentary to §2M6.1 (Nuclear, Biological, and Chemical Weapons, and Other Weapons of Mass Destruction). “Brandished”, “dangerous weapon”, “firearm”, and “otherwise used” have the meaning given those terms in Application Note 1 of the Commentary to §1B1.1 (Application Instructions). “Mass transportation” has the meaning given that term in 18 U.S.C. § 1992(d)(7). Historical Note Effective November 1, 1987. Amended effective November 1, 1989 (amendments 97 and 303); November 1, 1993 (amendment 480); November 1, 1995 (amendment 534); November 1, 2002 (amendment 637); Novem- ber 1, 2007 (amendment 699); November 1, 2023 (amendment 815).