Text in force at CS27-10: from CS27-0, effective 14 Nov 2003.
(a) The special factors prescribed in CS 27.621 to 27.625 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 to which CS 27.621 to 27.625 apply, the factor of safety prescribed in CS 27.303 must be multiplied by a special factor equal to:
(1) The applicable special factors prescribed in CS 27.621 to 27.625; or
(2) Any other factor great enough to ensure that the probability of the part being understrength because of the uncertainties specified in sub-paragraph (a) is extremely remote.
ED Decision 2003/015/RM · Source