United Airlines pilots resist contract changes over regional routes

President of the U.S. No. 3 carrier, Scott Kirby, has called for changes to the so-called "scope clause" which sets guidelines on the size of planes that can be operated by regional feeder carriers, among other things.A scope clause restricts planes heavier than 86,000 pounds (39,000 kg) with more than 76 seats from regional routes, where pilots are generally paid less than their mainline counterparts."We are holding the line," said Todd Insler, chairman of the unit of the Air Line Pilots Associ