That's a curious post LeadSled.
Am I interpreting you correctly that Boeing will not guarantee that the engines will keep turning with less than 30 minutes of fuel in tanks?
I was under the impression that there was some aircraft design rule that engines must still be turning as fuel gauges click to zero.
If I am dealing with a greater emergency with 30 minutes of fuel left in tanks, I would really like to know whether my engines will actually keep turning for those 30 minutes.