Why can't you open the cabin baggage door past 40,000'?
I was reading through some manuals for the Falcon 7X and G550, and for the 7X there was an outright prohibition on opening the door at higher than 40,000', while in the G550 there were instructions that at over 40,000' you must open the door for a maximum of 5 minutes at a time.
What is the reasoning for these regulations?
Also, official cabin length specifications for these aircraft are 39'1" for the Falcon and 50'1" for the Gulfstream. I suspect, but cannot confirm anywhere, that gulfstream includes the length of their baggage compartment but that Dassault only includes length to the internal baggage door. Is that true?