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The Hush Kit reduces vibrations and noise by sticking to the skin of the plane and acting as an insulation barrier and sound deadener. Our tests on the kit have shown noise reductions of 4-7 dB (a) range (what you hear) and 10-15 dB (c) range (what you feel). These reductions took a Cessna 150 made it possible to hold a conversation without the need for a headset.
The OEM fiberglass insulation is notorious for holding moisture which leads to corrosion on the skin of the plane. In addition to its sound barrier and insulation qualities, closed-cell foam, though possessing a sponge-like feel, will not hold moisture, so no more corrosion worries!
A common question with this kit is "how much weight would it add?" The material weighs 3.2 oz. per sq. ft. for a total gain of 5-7 lbs. for the entire aircraft. The Hush Kit meets general aviation flammability requirements under FAR 25.853 (a), Appendix F, Part 1 (a)(1)(ii) and the kit includes the appropriate paperwork.
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