Regulation · 14 CFRCurrent as of October 15, 2026 (eCFR)
14 CFR 91.859 Modification to meet Stage 3, Stage 4, or Stage 5 noise levels
Subpart I—Operating Noise Limits
A reference copy of the official regulation text for study. It is not legal advice or an FAA interpretation; always confirm against the current official source.
For an airplane subject to § 91.801(c) of this subpart and otherwise prohibited from operation to or from an airport in the contiguous United States by § 91.855, any person may apply for a special flight authorization for that airplane to operate in the contiguous United States for the purpose of obtaining modifications to meet Stage 3, Stage 4, or Stage 5 noise levels.
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