(i)
Retracted;

(ii)
Extended; and

(5)
The rotorcraft trimmed at appropriate speeds found necessary by the Admi-nistrator to demonstrate stability throughout the prescribed speed range.

(d)
[Hovering. For helicopters, the longitudinal cyclic control must operate with the sense, direction of motion, and position as prescribed in Sec. 29.173 between the maximum approved rearward speed and a forward speed of 17 knots with–

(1) Critical weight;
(2)
Critical center of gravity;

(3)
Power required to maintain an approximate constantheightinground e.ect;

(4)
Thelandinggear extended; and

(5)
The helicopter trimmed for hovering.]

Amdt. 29-24, E.. 12/6/84
FAR29.177 :[Staticdirectional stability.]
[Static directionalstability must bepositive with throttle and collective controlsheld constantatthetrim conditions speci.edinSec.29.175(a),(b), and(c). Sideslip angle must increase steadily with directional control de.ection for sideslip angles up to ±10' from trim. Su.cient cues must accompany sideslip to alert the pilot when approaching sideslip limits.] Amdt. 29-24, E.. 12/6/84
FAR29.181 :[Dynamic stability : categoryA rotorcraft.]
[Anyshort-period oscillation occurring at any speed from VY to VNE must bepositi-vely damped with the primary .ight controls free and in a .xed position.] Amdt. 29-24, E.. 12/6/84
72.4 Ground and Water Handling Characteristics
FAR 29.231 : General.
The rotorcraft must have satisfactory ground and water handling characteristics, includingfreedomfrom uncontrollable tendenciesin any condition expectedin operation.
FAR 29.235 : Taxiing condition.
The rotorcraft must be designed to withstand the loads that would occur when the rotorcraftis taxied over the roughestground that may reasonablybe expected in normal operation.
FAR 29.239 : Spray characteristics.
Ifcerti.cationfor water operationis requested, no spray characteristicsduringtaxiing, takeo., or landing may obscure the vision of the pilot or damage the rotors, propellers, or other parts of the rotorcraft.
FAR 29.241 : Ground resonance.
The rotorcraft may have no dangerous tendency to oscillate on the ground with the rotor turning.
′
Elodie Roux. Septembre 2003
Subpart B : Flight
72.5 Miscellaneous Flight Requirements
FAR 29.251 : Vibration.
Each part of the rotorcraft must be free from excessive vibration under each appro-priate speed and power condition.
Chapitre 73
Subpart C : Strength Requirements
Sommaire
73.1General ............................... 937 FAR29.301:Loads. ....................... 937 FAR29.303:Factorof safety.. . . . . . . . . . . . . . . . . . 937 FAR 29.305 : Strength and deformation. . . . . . . . . . . . . 937 FAR29.307:Proof of structure. . . . . . . . . . . . . . . . . 937 FAR29.309:Designlimitations. . . . . . . . . . . . . . . . . 938
73.2FlightLoads ............................ 938 FAR29.321:General. ...................... 938 FAR 29.337 : Limit maneuvering load factor. . . . . . . . . . 938 FAR 29.339 : Resultant limit maneuvering loads. . . . . . . . 938 FAR29.341:Gustloads. .................... 939 FAR29.351:Yawing conditions. . . . . . . . . . . . . . . . . 939 FAR29.361:Enginetorque. .................. 940
73.3 ControlSurface andSystemLoads . . . . . . . . . . . . . . . 940 FAR29.391:General. ...................... 940 FAR29.395:Control system. . . . . . . . . . . . . . . . . . . 940 FAR 29.397 : Limit pilot forces and torques. . . . . . . . . . . 941 FAR29.399:Dual control system. . . . . . . . . . . . . . . . 941 FAR29.401:[Removed.] .................... 941 FAR29.403:[Removed.] .................... 942 FAR 29.411 : Ground clearance : tail rotor guard. . . . . . . . 942 FAR29.413:[Removed.] .................... 942 FAR29.427:Unsymmetricalloads.. . . . . . . . . . . . . . . 942
　
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