Table 2. Weight of anticipated potential of fuel savings by phases of flight operation

Lv.1 (Wt.)	Lv.1 CI	Lv.2 (Wt.)	Lv.2 CI
Pre flight planning & briefing (0.410)	CI / 0.18	Safety (0.603)	CI / 0.07
		On time (0.115)
		Fuel efficiency (0.114)
		Comfort (0.195)
		Convenience (0.72)
Engine start & take off (0.155)		Safety (0.39)	CI / 0.06
		On time (0.171)
		Fuel efficiency (0.189)
		Comfort (0.125)
		Convenience (0.125)
Climb, cruise, descent (0.179)		Safety (0.313)	CI / 0.12
		On time (0.213)
		Fuel efficiency (0.129)
		Comfort (0.155)
		Convenience (0.190)
Approach, land, engine shut-down (0.257)		Safety (0.367)	CI / 0.18
		On time (0.132)
		Fuel efficiency (0.176)
		Comfort (0.15)
		Convenience (0.167)

※ (CI) = (⋋max - n) / (n – 1)