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title 14
Aeronautics and Space
chapter I
CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
part 27
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
subpart B
Subpart B—Flight
subjgrp 165
Miscellaneous Flight Requirements
Subjgrp 165. Miscellaneous Flight Requirements
§ 27.251 - Vibration.
