Part 121 pilots are required to be airport qualified for every Regular, Provisional, and Refueling airport set forth in their ops specs. Perhaps SWA's flight ops management shares some of the blame if their airport qualifications program is inadequate. That we don't know but I hope we eventually find out about their program.
Perhaps you are referring to this reg:
§121.443 Pilot in command qualification: Route and airports.
(a) Each certificate holder shall provide a system acceptable to the Administrator for disseminating the information required by paragraph (b) of this section to the pilot in command and appropriate flight operation personnel. The system must also provide an acceptable means for showing compliance with §121.445.
(b) No certificate holder may use any person, nor may any person serve, as pilot in command unless the certificate holder has provided that person current information concerning the following subjects pertinent to the areas over which that person is to serve, and to each airport and terminal area into which that person is to operate, and ensures that that person has adequate knowledge of, and the ability to use, the information:
(1) Weather characteristics appropriate to the season.
(2) Navigation facilities.
(3) Communication procedures, including airport visual aids.
(4) Kinds of terrain and obstructions.
(5) Minimum safe flight levels.
(6) En route and terminal area arrival and departure procedures, holding procedures and authorized instrument approach procedures for the airports involved.
(7) Congested areas and physical layout of each airport in the terminal area in which the pilot will operate.
(8) Notices to Airmen.
I think some folks here are talking about special quals which can indeed be done by looking at the pictures in the Jepps:
§121.445 Pilot in command airport qualification: Special areas and airports.
(a) The Administrator may determine that certain airports (due to items such as surrounding terrain, obstructions, or complex approach or departure procedures) are special airports requiring special airport qualifications and that certain areas or routes, or both, require a special type of navigation qualification.
(b) Except as provided in paragraph (c) of this section, no certificate holder may use any person, nor may any person serve, as pilot in command to or from an airport determined to require special airport qualifications unless, within the preceding 12 calendar months:
(1) The pilot in command or second in command has made an entry to that airport (including a takeoff and landing) while serving as a pilot flight crewmember; or
(2) The pilot in command has qualified by using pictorial means acceptable to the Administrator for that airport.
(c) Paragraph (b) of this section does not apply when an entry to that airport (including a takeoff or a landing) is being made if the ceiling at that airport is at least 1,000 feet above the lowest MEA or MOCA, or initial approach altitude prescribed for the instrument approach procedure for that airport, and the visibility at that airport is at least 3 miles.
(d) No certificate holder may use any person, nor may any person serve, as pilot in command between terminals over a route or area that requires a special type of navigation qualification unless, within the preceding 12 calendar months, that person has demonstrated qualification on the applicable navigation system in a manner acceptable to the Administrator, by one of the following methods:
(1) By flying over a route or area as pilot in command using the applicable special type of navigation system.
(2) By flying over a route or area as pilot in command under the supervision of a check airman using the special type of navigation system.
(3) By completing the training program requirements of appendix G of this part.
I don't know how they used to do it but in the real world I've been sent to a new station with special quals and picture pages in the Jepps. I was good to go after reviewing the pictures, maybe some acknowledgement was in the flight release by my signature but I don't remember.