the aircraft must have such stability as to ensure that the demands made on the pilot are not excessive taking into account the phase of flight and its duration;
ní mór a oiread cobhsaíochta a bheith san aerárthach agus a áiritheoidh nach mbeidh na héilimh a dhéanfar ar an bpíolóta iomarcach, agus céim na heitilte chomh maith lena fad á gcur san áireamh;