Text in force at CS29-12: from CS29-0, effective 14 Nov 2003.
(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 s ervice before normal replacement; or
(3) Subject to appreciable variability due to:
(i) Uncertainties in m anufacturing 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 m ust be m ultiplied 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.
ED Decision 2003/016/RM · Source