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2011年4月19日，美国海关和边境保护局的P-3AEW&C第六中期寿命升级型交付，承包商为洛克希德·马丁公司，升级后的P-3AEW&C使用寿命可达15000小时，预计可再使用20年以上。（Lockheed Martin delivered the U.S. Customs and Border Protection’s sixth Mid-Life Upgraded P-3 Orion on Friday, Nov. 9, 2012--about 40 days ahead of schedule.The MLU replaces all fatigue life-limiting structures with enhanced-design components and incorporates a new metal alloy that is five times more corrosion resistant than the original material, greatly reducing the cost of ownership for P-3 operators. The MLU solution removes current aircraft flight restrictions and extends the structural service life of the P-3 up to 15,000 hours, adding more than 20 years of operational use. This particular upgrade was completed in 11 months.）

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