C.F.R. » Title 14 » CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › SUBCHAPTER C—AIRCRAFT › PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT › Subpart B—Flight

14 C.F.R. § 27.171

Stability: general

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The rotorcraft must be able to be flown, without undue pilot fatigue or strain, in any normal maneuver for a period of time as long as that expected in normal operation. At least three landings and takeoffs must be made during this demonstration.