1. Passengers: The passengers insist on going as fast as they can to their destination. That means fast airplanes and that means flying high where the air is thin and jet engines are efficient. It also means pressurized cabins. Passengers do not want to wait on the ground while their baggage is loaded slowly, and if a large hole is to be cut in the pressurized cabin to quickly load baggage, then so be it. Passengers want to pay low fares for their fast ride. If the price of the ticket can be lowered by the aircraft carrying cargo in the pressurized hull with a large hole cut in it, then so be it. Part of the passenger's ticket cost is defrayed by the owner of the cargo being shipped. Passengers get their fast, cheap ride that's a little risky. It's very risky when the cargo door pops at altitude and explosive decompression occurs at 300 knots, leading to death, but the flight was loaded quickly and the fares were cheap.
2. The airline. The airline is in business to make a profit. To make
a profit the money coming in must be more than the money going out.One way
to make money come in is to carry cargo and lots of it. Aircraft on the
ground loading and unloading cargo are not making money. To quickly get
the cargo on and off a large hole can be made in the pressurized hull. A
strong door weighs a lot and does not make money. Cargo weighs a lot and
makes money. The weaker, outward opening door is lighter and does not get
in the way of the containerized cargo loading system. The system is cheap,
fast, and a little risky.It's very risky when the door pops at altitude
and some of the cargo is ingested into number three engine.
Passengers on the ground sitting and waiting for their baggage to be loaded
are upset, not paying the airline, and may not return. To get the baggage
loaded quickly a large hole can be cut into the pressurized hull. To satisfy
the paying customers the baggage is loaded quickly through the large hole.
It is cheap, fast, and a little risky. It is very risky when the large hole
opens up at altitude and allow the 300 knot wind to tear the head off the
aircraft deterring other passengers from flying on that airline.
3. The manufacturer. Airplanes are made by companies to make a profit which allows them to make more airplanes and stay in business.The airlines buy the airplanes from the manufacturer intending to make a profit also. The airlines order airplanes that can carry cargo and passengers which can be loaded quickly so that the airplane will stay on the ground less and in the air longer, thereby making a profit. If a large hole has to be cut in the pressurized hull to persuade the airline to buy the airplane, then so be it. The airplane is cheap, fast, and a little risky. It is very risky when the door opens at altitude allowing the head to be torn off leading to the destruction of the airliner's airplane and a reluctance from airlines to buy further airplanes from the manufacturer.
4. The government. The government exists to keep everything running smoothly.Things are kept running smoothly if everyone makes a profit. Everyone makes a profit if the passengers get where they want fast and cheap; the airlines have full cabins and cargo compartments; and the manufacturers have orders to make airplanes.The government issues rules to make everything run smoothly based upon advice from the passengers, the airlines, and the manufacturer. When the passengers demand fast and cheap flights, the airlines demand fast turn around times, and the manufacturer demands sales, and all agree that a large hole cut into a pressurized hull will keep things running smoothly even though it is a little risky, then the government says an outward opening door in a pressurized hull is permissible. It's fast, cheap, and a little risky. It's very risky when that door opens in flight and voter passengers get pushed out to their deaths.
5. Insurance companies. A plane that is flying but is a little risky is better than a plane that is not flying but has no risk. Airlines will pay premiums on airplanes that fly but may crash but will not pay premiums on planes that do not fly and have no risk.The company will charge a premium on a pressurized hull with a large hole cut in it because that hole will allow the aircraft to fly. The coverage is fast, cheap and a little risky. It is very risky when the door opens and the plane is destroyed, passengers die, and many claimants come forward.
6. The victims. The dead passengers, the bankrupt airline, the insolvent
manufacturer, the deposed government, and the broke insurance company are
all to blame. They all accepted the risk of the large door opening at altitude
leading to death and destruction because they all wanted something that
was fast, cheap, and a little risky. They all thought it would happen to
the other guy. They all thought it would not happen to them.Well, it did
happen to them. It happened to the other guy too. The large hole in the
pressurized hull opened. The risk was taken and lost.