Rockwell International Corp. said its first-quarter earnings...

Rockwell International Corp. said its first-quarter earnings were down 17% to $160 million from the year-ago period, when profits were boosted by a $50-million tax gain related to production of the B-1B bomber. The El Segundo aerospace, electronics and industrial company added that sales for the quarter were $2.87 billion, up 7%. The results include gains by electronics, automotive and graphics, although aerospace earnings were off because of the completion in 1988 of B-1B production.