Originally posted By HeathrowAirport ..
Obviously the CSMU is shaped in such away that it can stay afloat?
Specifications I have seen for the complete SSFDR don't break down the chassis, CSMU and ULB weights. Anyway as it is a mass/volume issue, I suspect that the weight/effective volume of the crash / fire / depth resistant outer steel container will probably exceed 1.025 and floating is not an issue. The attached ULB will probably seal its fate.
If that is not the case, there is a serious design problem.
