Airworthiness Directives; The Boeing Company Airplanes Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes

요약

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Airplanes Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD would require checking the escape slide girt for serviceability and replacement if necessary, modifying the cable routing provision, replacing the regulator padding, modifying the aspirator orientation, and modifying the valise. This proposed AD also would, for certain airplanes, require modifying or replacing the Vespel piston, modifying the pilot valve regulator, installing a new firing cable and safety pin, and modifying the slide valise. This proposed AD was prompted by reports of escape slides failing to deploy from the forward and aft right-hand doors during scheduled maintenance slide deployments, which could result in the slide being unusable during an emergency evacuation and increased likelihood of injury to passengers or crewmembers due to the difficulty in evacuating the aircraft.