For its part, Boeing representatives announced they are “reviewing the report, which appears to be based on an inapt comparison of the prices paid for parts that meet aircraft and contract specifications and designs versus basic commercial items that would not be qualified or approved for use on the C-17,” the company said in a statement.
looks dubiously at dispenser
In what way is the right-hand soap dispenser not adequately qualified?
EDIT: It looks like the C-17 can fly pressurized, so I don't think that it can be undergoing pressure changes, which is the one thing that I could think of.
The COTS unit shown there is not tested and certified to the contract requirements Boeing was working to. Simple as. If the price ridiculous? Absolutely yes. But you cannot go to a home hardware store and slap one in a plane.
The cabin is usually pressurized to the equivalent of 8000 ft asl. So the dispenser does have to deal with pressure changes. A simple vent hole aught to take care of that though.
Also, as the safety briefing says, "we do not anticipate a change in cabin pressure," but if a rapid decompression should occur, there was probably some provision made so that the soap dispenser doesn't just shatter or explode or something.
I would hate not to be able to use the dispenser if the plane lost cabin pressure.. how would I ever survive dying if I had dirty hands when it happened?..