49 C.F.R. § 1542.301 – Contingency plan.

(a) Each airport operator required to have a security program under § 1542.103(a) and (b) must adopt a contingency plan and must:
1. (1) Implement its contingency plan when directed by TSA.
2. (2) Conduct reviews and exercises of its contingency plan as specified in the security program with all persons having responsibilities under the plan.
3. (3) Ensure that all parties involved know their responsibilities and that all information contained in the plan is current.
(b) TSA may approve alternative implementation measures, reviews, and exercises to the contingency plan which will provide an overall level of security equal to the contingency plan under paragraph (a) of this section.