243.7—Information collection requirements.
(1)
Collect, or cause to be collected, the full name for each passenger who is a U.S. citizen. U.S.-citizen passengers for whom this information is not obtained shall not be boarded;
(2)
Solicit, or cause to be solicited, a name and telephone number of a contact from each passenger who is a U.S. citizen; and
(b)
The covered airline operating the flight segment shall be responsible for ensuring compliance with paragraph (a) of this section.