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Boeing [BA] on Wednesday reported a double-digit decline in its first quarter net income stemming from previously announced charges related to changes in its retirement plan and higher tax expenses but the company’s core results, which exclude certain retirement expenses, were strong. Excluding the retirement expenses, Boeing’s core operating earnings increased 12 percent to $2.1 billion, $1.76 earnings per share (EPS), from $1.9 billion ($1.73 EPS), well above consensus estimates of $1.56 EPS. Core operating margins were up 30 basis…
