Regulations last checked for updates: Feb 06, 2026

Title 14 - Aeronautics and Space last revised: Dec 19, 2026
§ 13.224 - Burden of proof.

(a) Except in the case of an affirmative defense, the burden of proof is on the agency.

(b) Except as otherwise provided by statute or rule, the proponent of a motion, request, or order has the burden of proof.

(c) A party who has asserted an affirmative defense has the burden of proving the affirmative defense.

authority: 18 U.S.C. 6002; 28 U.S.C. 2461 note; 49 U.S.C. 106(g), 5121-5124, 40113-40114, 44103-44106, 44701-44704, 44709-44710, 44713, 44725, 44742, 44802 (note), 46101-46111, 46301, 46302 (for a violation of 49 U.S.C. 46504), 46304-46316, 46318-46320, 46501-46502, 46504, 46507, 47106, 47107, 47111, 47122, 47306, 47531-47532; 49 CFR 1.83
source: Docket No. 18884, 44 FR 63723, Nov. 5, 1979, unless otherwise noted.
cite as: 14 CFR 13.224