4 ms·

Everything you mentioned was done. Including assymteric patterns, the bolts couldn’t be put in the wrong way and had arrows with color markings. The installatio

• WalterBright 8y ago
  > a pair of five-millimeter pins on the mounting platform for DUS sensors are designed to help the technician in the correct placement of instruments, however with a certain effort it is possible to mount the sensor without those pins fitting into their holes and still attach it securely with fasteners. Moreover, it was possible to insert all incoming color-coded cables in their correct sockets, despite a wrong position of DUS sensors. > However the technician's supervisor and a quality control specialist were supposed to check on the completion of the installation. All three people involved in this process did leave their signatures in the assembly log. http://www.russianspaceweb.com/proton_glonass49.html http://www.russianspaceweb.com/proton_glonass49.html There are 3 failures here: the fasteners were still able to be fastened, the cables were long enough to fit on the wrong side, and the inspector who signed off on it didn't inspect it. Yes, I'm being picky and pedantic, but that's necessary for flight critical hardware.