FL310
The Inquisitor. My reference to Dengue Dude flying around at FL310 without oxy was aimed at his stated location (FL310 Mach .82) on his profile. BTW, have operated at above FL310 with pax (special dispensation) on more than one occasion. Normally limited to FL260 with pax, due no pax oxy available. Very rare to get ISA -20 down this part of the world, more often ISA +20. The C130A with MTOW of 124200lbs would get up about 5-6000' higher to initial cruise than the 'E' . The 'E' was a dog by comparison at it's MTOW of 155000lbs, the 'H' a much better aircraft in my view.