777: The crew oxygen bottle is mounted horizontaly on the left aft wall of the nose wheel well structure with the fittings (propelling nozzle) facing forward. This aims the bottle, in the event of a QF30 type failure, directly into the MEC containing all boxes concerned with coms and a lot more.
NO IT ISN'T!!
The fittings are on the rear/aft facing end of the bottle. If the fitting was to fail and the restraining straps were also to fail, then potentially, the bottle would go forwards not aft. That would send it either straight through the radome or potentially deflected upwards into the below flightdeck area. This contains the backdrive mechanisms for the control column and rudder pedals.
The possibility (of an O2 bottle failing as such) is remote at the extreme but not unprecedented.
I don't buy it.