WASHINGTON ( TheStreet) -- Cars and planes dragged down durable goods in June, resulting in the largest decrease in orders in five months. Manufacturers' orders for durable goods dropped by 2.5% last month to $158.57 billion, the Commerce Department said on Wednesday. Economists had forecast a 0.6% drop. This was the biggest setback since a 7.8% tumble in January. Orders for planes plunged 38.5%, as the recession has severely strangled air travel, forcing some airlines to cancel existing orders for planes. Aircraft giant Boeing ( BA) suffered production delays of its new 787 Dreamliner. Motor vehicles and parts orders slipped 1% in June, reflecting bankruptcy filings of General Motors and Chrysler, and the more generalized woes of Ford ( F). But excluding the messy transportation sector, durable goods actually rose 1.1%, boosted by demand for primary metals, such as steel, which jumped 8.9%, and industrial machinery, which rose 4.4%. This steadiness outside transportation could be a sign that there are brighter days ahead. Shares of durable goods company Black & Decker ( BDK) dropped 0.4% to $37.25, Whirlpool ( WHR) slipped 1% to $54.58 and Stanley Works ( SWK) was off 2% to $38.90. --Reported by Jeanine Poggi in New York.