As was spoken about at that time, some airlines had/have a better "working relationship" with the FEDs than others - ie, our government and its various agencies have been for sale to the highest bidder for years. If the relationship is "cozy" enough, their personnel will gladly look the other way.
As the other gent mentioned, don't forget about the interference ran by Oberstar, the SOB politician from MN (Chairman, House Transportation Committee) looking to extract "campaign contributions", Lobby money, and other outright bribes from NWA.
There was one and perhaps two FAA inspectors, as I recall, that commented and complained re: this "coziness" and were summarily hidden, retired, or otherwise hushed up by the FAA.
American Airlines has never had a great relationship with the government due to the simple fact we had a no-nonsense, cut the crap-type of businessman at the helm for years that really didn't have the word "schmooze" in his vocabulary - that was Uncle Bob. Believe it or not, we're still paying for that as it's very evident we, for years, haven't gotten to share in the route awards handed to other airlines.
As has been said before by many people, we have the best government money can buy as well as (presently) the same manner of representation from the TWU.
It's time to take out the garbage.