Barbers Pole
Just as matter if interest hiw do these people live high in the Andes or climb Eversest with out O2 ?
Just a thought
LJR
There was a Beech SB to remove the O2 operating cable and fill with a non-freezing grease. Why they didnt do this originally as the cable is clipped to the outer frames on the skin. Also the O2 cylinder is in the adft of the aircraft outside the pressurise area. The standard procedure was to put it on on preflight check but they put it off to stop cylinder leakage.
The procedure now is to put it on at preflight and leave it on.