[RussWhite]

I have been a little occupied and apologize for not commenting and keeping up. Thanks for all the suggestions. I think what happens if we have a big air pressure loss has been pretty well covered. But, just to be clear, when the available air for braking drops to around 40 psi the parking brake valve will "pop-out" in it's own. You can and should test this occasionally, or more properly, probably everything time you do your DOT brake check on each day you will be driving. You can test it by shutting down the engine and feathering the brakes - on and off and on and off - and that uses up the air and the pressure will drop. Watch the gauges fall and before long you will see the parking brake valve ( yellow diamond ) pop out and also get a low air alarm. When the parking brake valve is engaged, pulled toward you, the air opposing springs in the brake canisters on the drive axle is exhausted ( that is what you hear when you engage the parking brake ) and the springs the push and put on brakes at that position only. No parking brakes on steer wheels.

The suggestion to pinch off the hose, which I could have done, would stop the leak but seriously compromise my braking ability. Whether to do something like that is a very personal decision.

Now for the stuff that interests me a lot, what caused this to happen? Of all the things I may have done wrong, I did manage to do one thing right and I have possession of the failed hose and canister. Good high resolution close-up pictures to follow so each guru may made his own judgement. I have my opinion now, but will hold it while you all have a chance to look at the pictures.
I'll take the images and download shortly.
Still no word from CoachNet. Russ parked with no travel plans for a while…..