When the manufacturer asks to conduct a running-in procedure in accordance with paragraph 8.3.2.1., it may be carried out on:
(a) all the engines that are tested, or; (b) the first engine tested, with the determination of an evolution coefficient as follows: (i) the pollutant emissions will be measured at zero and at ‘x’ hours on the first engine tested, (ii) the evolution coefficient of the emissions between zero and ‘x’ hours will be calculated for each pollutant: ...
