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CS 29.619 Special factors

ED Decision 2003/16/RM

(a)     The special factors prescribed in CS 29.621 to 29.625 apply to each part of the structure whose strength is:

(1)     Uncertain;

(2)     Likely to deteriorate in service before normal replacement; or

(3)     Subject to appreciable variability due to:

(i)      Uncertainties in manufacturing processes; or

(ii)     Uncertainties in inspection methods.

(b)     For each part of the rotorcraft to which CS 29.621 to 29.625 apply, the factor of safety prescribed in CS 29.303 must be multiplied by a special factor equal to:

(1)     The applicable special factors prescribed in CS 29.621 to 29.625; or

(2)     Any other factor great enough to ensure that the probability of the part being under strength because of the uncertainties specified in sub-paragraph (a) is extremely remote.