“day” means a continuous period of 24 hours beginning at midnight;

“fatigue” means a physiological state of reduced mental or physical performance resulting from sleep loss, extended wakefulness or physical activity that can impair a crew member’s alertness and ability to safely operate an aircraft or perform safety related duties;

“flight time”, in relation to any person, means all time spent by that person in an aircraft whether or not registered in Singapore (other than an aircraft of which the maximum total weight authorised does not exceed 1,600 kg and which is not flying for the purpose of public transport or aerial work) while it is in flight and he is carried therein as a member of the crew thereof.”.