was lowered yesterday. since the weekend, air travelers should be facing lower fares because they haven't had to pay federal taxes on plane tickets. the taxes have been temporarily dropped, because on friday congress failed to re-authorize the federal aviation administration's operating authority, resulting in the partial shutdown of the agency. but it turns out instead of passing savings on to customers, airlines have been pocketing the difference by quieting raising fares in recent days. meanwhile, because of congress's failure to act, construction has stopped at airport infrastructure projects across the u.s. here's your "first look" at some of the other news going on around america today. a scare in the air over dallas led to an emergency landing for one american airlines flight. an engine fire indicator forced pilots to dump fuel shortly after taking off. pilots made a rough landing, blowing several tires upon touching down. crew members and passengers walked away without injuries and