(1) Prevent excessive vibration; and
(2) Prevent flutter at any speed up to the maximum forward speed.
(b) The structural integrity of the mass balance installation must be substantiated.
[Amdt. 29–3, 33 FR 967, Jan. 26, 1968]
NEXT: Sec. 29.661 - Rotor blade clearance.
PREVIOUS: Sec. 29.653 - Pressure venting and drainage of rotor blades.