Over the course of a product’s life cycle, the device may require certain changes. Before these changes can be made, a manufacturer must acquire a PMA (Premarket Approval) supplement. A PMA supplement is the submission required for a change regarding the safety or effectiveness of a device for which an applicant already has an existing PMA. Similar to PMA supplements, PMA amendments include all additional submissions to a PMA or PMA supplement prior to approval of the PMA, PMA Supplement, or all additional correspondence after the PMA or PMA supplement.


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Within a plumbing or fluid system, valves are important components that are implemented to regulate, control, and direct the flow of fluids within the system. Solenoid valves are a special type of valve that is operated electromechanically, and they may perform many of the same functions of a standard valve automatically. With various types available that offer diverse sets of capabilities, solenoid operated valves may benefit a number of plants, equipment, and applications. In this blog, we will discuss the functionality of solenoid valves, as well as the applications that they benefit.


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Aircraft are defined by their wings. The shape, size, and configuration will affect all aspects of an aircraft’s performance and specifications. Wings are airfoils, shapes designed to create lift when moving rapidly through the air. This lift, combined with the thrust generated by the aircraft’s engine or engines, is what allows an aircraft to fly.


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Aching legs, weird humming noises, squeezing past other people to get to the restroom— these discomforts describe the features of a bad aircraft seat, and rest assured, we’ve all been there. So, where is the best place to sit on an airplane? Is it worth it to pay for your seat, or to sit by your device 24 hours after booking your flight to get that “A” boarding pass? We’ll lay out all the facts using the example of a widebody aircraft so that you can make your decision with ease.


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