Boeing shares were under pressure on Monday after the troubled aerospace firm said it plans to spend several days fixing mis-drilled holes on 50 undelivered 737 planes. In a memo sent out to employees on Sunday, Boeing Commercial Airplanes CEO Stan Deal said the company plans to dedicate several days at its 737 factory in Renton, Washington to carrying out inspections and reworking fuselages supplied to it by Spirit AeroSystems. Shares in Boeing BA, -0.20% fell more than 2% in premarket trading on Monday. T ...