"Morgans" wrote in
:


"Allen" wrote

Learjets do indeed use bottled oxygen and it is found in the nose bay
area. There is a thin capillary that runs into the cockpit to a
pressure gauge. The pressure gauge displays the pressure in the tank
regardless of whether the valve is turned on or off. The pressure in
the tank can read full on the ground but at low temperature at
altitude will read several hundred pounds less.

They do? For primary breathing air at altitude? Is there no cabin
air pressurization provided by bleed air from the engines?

I'm not doubting your word, just trying to understand. I thought all
bizjets used bleed air to pressurize the cabins.



They do you idiot. Loss of pressurisation was being discussed.

Learn to read...


Bertie