Originally Posted by
Stitchbitch
Are the two tubes attached to anything at the top end? The oxygen connector is a modified MC-3A, but instead of the inlet warning device it has a two pin bayonet fitted, so possibly an AR5 training device or an X-mask. The small port on the side of the connector is normally attached to the Emergency Oxygen hose, the two pin would go to some kind of Personal Equipment Connector or filtered air supply.
It could be something random that's come from the weirdness of Farnborough?
I can't remember how we inflated the pressure jerkins used in the chambers there?