Arrests raise air-safety concerns 3-12-05 By Taft Wireback Staff Writer News & Record GREENSBORO -- Air safety advocates are troubled by TIMCO's use of illegal immigrants to work on airplanes at Piedmont Triad International Airport not only for fear of terrorism, but also out of concern for mechanical errors that could put the flying public at risk. The company's use of undocumented immigrants could lead to a maintenance flaw with serious in-flight consequences, said Gail Dunham, president of the National Air Disaster Alliance/Foundation. "TIMCO hired them because they are cheap," said Dunham, a Summerfield resident whose Washington-based group claims to...