Overspeed and overtorque.

§ 35.41 Overspeed and overtorque. (a) When the applicant seeks approval of a transient maximum propeller overspeed, the applicant must demonstrate that the propeller is capable of further operation without maintenance action at the maximum propeller overspeed condition. This may be accomplished by: (1) Performance of 20 runs, each of 30 seconds duration, at the maximum propeller overspeed condition; or (2) Analysis based on test or service experience. (b) When the applicant seeks approval of a transient maximum propeller overtorque, the applicant must demonstrate that the propeller is capable of further operation without maintenance action at the maximum propeller overtorque condition. This may be accomplished by: (1) Performance of 20 runs, each of 30 seconds duration, at the maximum propeller overtorque condition; or (2) Analysis based on test or service experience. [Amdt. 35-8, 73 FR 63349, Oct. 24, 2008]