I 25.5 Thrust or power setting

The initial setting of thrust or power controls on each engine at the beginning of the take-off roll may not be less than the lesser of –

(a)That required to permit normal operation of all safety-related systems and equipment dependent upon engine thrust or power lever position; or

(b)That shown to be free of hazardous engine response characteristics when thrust or power is increased from the initial take-off thrust or power level to the maximum approved take-off thrust or power.