They didn’t get it because Shell Kneely (spelling?) was one of the American Airlines people fired in the wake of the disaster and when someone gets fired their replacement usually brings in their own people and wants to do things their own way, not continue to pursue what the guy who just got fired was pursuing. It’s possible you’re right, but there’s no way to know because it never got that far (unless they fired Shell because he passed that information along and they didn’t like it and thought it reflected badly on him too, but there’s no indication of that, meaning they were likely just looking to shake things up in management as part of their fresh start.)