Uhhhm please clarify your question it makes no sense at all
The airplane was flying at a very high altitude.
50km in height
plane was flying at 650m
Air freight may not be pressurized because it has no need to breathe as living things do. When the airplane reaches its altitude, the oxygen content is low enough to cause death.
Troposphere
I have hiked up to the altitude of 14,000 feet. That airplane will be above the altitude of those clouds.
Altitude sickness most likely
480 kts
From the altitude of the airplane when you jumped out.
The altitude ranges from 30,000 feet to 45000 feet. This is only average altitude. This range is suitable when the plane has levelled.
The bar-headed goose flys at the highest altitude and reaches the highest altitude of any animal.
It depends what aircraft and what speed you are going