LFingar wrote:
Cargo holds on all commercial airliners are pressurized the same as the cabins. By your feet you will find disguised vents that allow free flow of air between the cabin and cargo areas. It is an FAA requirement for certification. Most airlines maintain pressure at the equivalent of 8,000 ft MSL. Newer, more efficient airliners, such as the 787, allow for 6,000 ft for increased passenger comfort.
I believed that since I was a kid and my neighbor shipped his dog cage as luggage and the dog arrived dead.