Airworthiness Directives; Boeing Model 737-400, -500, -600, -700, -700C, -800, and -900 Series Airplanes

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We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-400, -500, -600, -700, -700C, -800, and -900 series airplanes. This AD requires an inspection to determine the part and serial numbers of the windshield wiper motors for the pilot's and first officer's windshields, and doing applicable corrective actions. This AD results from two reports that the left and right windshield wipers stopped working in flight. We are issuing this AD to prevent failure of the windshield wipers in wet weather, which could result in decreased visibility for the flightcrew.