ED Decision 2003/18/RM
The factor of safety prescribed in CS-VLA 303 must be multiplied by the highest pertinent special factors of safety prescribed in CS-VLA 621 to 625 for each part of the structure whose strength is -
(a) Uncertain;
(b) Likely to deteriorate in service before normal replacement; or
(c) Subject to appreciable variability because of uncertainties in manufacturing processes or inspection methods for composite structures, a special test factor which takes into account material variability and the effects of temperature and absorption of moisture must be used.
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