Boeing handed over 27 airplanes to its customers last month as it continues to struggle with quality control problems and production delays that have frustrated the CEOs of some of its biggest airline customers. So far this year, Boeing has handed over 54 planes, while Airbus has widened its lead over its main rival, delivering 79 planes in the first two months of 2024. Delayed Boeing planes have been difficult for airline leaders. Southwest Airlines , which flies only Boeing 737s, on Tuesday said that it would trim capacity plans this year because of fewer Boeing Max deliveries and that...