Table 1-12 Period of Useful Consciousness in High Altitude Bailout
Bailout altitude (feet)	(Time in seconds)
	Useful consciousness	Free fall to 14,000 (feet)	28- to 30-foot chute to 14,000 feet
75,000	12	150	1,680, (28 minutes).
55,000	12	120	1,200 (20 minutes).
40,000	18	90	About 900 (15 minutes).
30,000	75	60	600 (10 minutes).