EagleEye Posted March 14 Posted March 14 I am trying to determine which models of helicopters qualify as "type 3" with respect to noise limits. There must be a list or database somewhere. Thanks. Quote
iChris Posted April 14 Posted April 14 (edited) You’ll find what you need in 14 CFR 36.1 (h) and the AC36-1G appendixes, which deal with the levels normally referred to as Stage 1, Stage 2, or the new noise standard Stage 3. AC36-1H Appendices 10 & 11 https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_36-1H.pdf 14 CFR 36.1 (h) https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-36/subpart-A/section-36.1 Edited April 19 by iChris Quote
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