Former TransWorld Airlines pilots, targetted by American Airlines for lay-offs, are fighting back. The pilots who now fly for American want the carrier and Congress to revisit their complaints about the seniority system that puts them first in line for lay-offs. About 60-percent of TWA’s 2,100 pilots fell to the bottom of the seniority list when American absorbed TWA even though many of the TWA pilots had been flying longer than American pilots. American has targetted 550 former TWA pilots for lay-offs as it copes with massive losses associated with the downturn in air travel since September 11th.