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AF444 is an interior aircraft repair compound designed to be a universal filling that meets smoke density, vertical burn, and OSU heat release mandates. Developed for reliable interior panel and Sandwich Panel core repair, AF444 comes in an easily mixable 2-pack system. AF444 can be applied by trowel or spatula and shaped after 10 to 20 minutes, taking only only 30 to 40 minutes to cure. A quick cure-time makes AF444 ideal for change-around operations.