Code of Federal Regulations Title 49. Transportation § 49.1544.303 Bomb or air piracy threats

(a) Flight:  Notification. Upon receipt of a specific and credible threat to the security of a flight, the aircraft operator must—

(b) Flight:  Inspection. Upon receipt of a specific and credible threat to the security of a flight, each aircraft operator must attempt to determine whether or not any explosive or incendiary is present by doing the following:

(c) Ground facility. Upon receipt of a specific and credible threat to a specific ground facility at the airport, the aircraft operator must:

(d) Notification. Upon receipt of any bomb threat against the security of a flight or facility, or upon receiving information that an act or suspected act of air piracy has been committed, the aircraft operator also must notify TSA. If the aircraft is in airspace under other than U.S. jurisdiction, the aircraft operator must also notify the appropriate authorities of the State in whose territory the aircraft is located and, if the aircraft is in flight, the appropriate authorities of the State in whose territory the aircraft is to land. Notification of the appropriate air traffic controlling authority is sufficient action to meet this requirement.