777 pilot bunk temperature control

[Check Airman]

For those in the know, for the bunk located behind the cockpit, if the heater is off, what temperature selector regulates the bunk temperature? Is it the cockpit temperature, zone A temperature etc? I can't find it in the manual. A reference would be appreciated.

Thanks

[STBYRUD]

If you're talking about the OFCR, the air comes from the left pack outlet upstream of the mix manifold, and it'll be at a maximum of 4 degrees science by design. It may of course be colder than that depending on other zone demands.
(Ref AMM SDS 21-29-00-402)

[Check Airman]

Thanks, I'm not referring to the overhead bunk. I see that that has a digital temperature selector. The (older?) bunks behind the cockpit simply have a knob that controls a heater. I'm trying to find out what temperature you get when the heater is off. I assume it's the same as one of the zones.

[STBYRUD]

I'm sorry, I should have read your original question more carefully, you did specify which one you meant. The flight crew rest air comes directly from the flight deck conditioned air distribution system. The only AMM for a 777 with that type of crew rest I have access to is for the freighter, and there the crew rest gets conditioned air from the supernumerary area distribution duct - so that'll be the minimum temperature then... For the passenger version I can't be sure, but I'd wager its flight deck conditioned air.

[Check Airman]

Originally Posted by STBYRUD

I'm sorry, I should have read your original question more carefully, you did specify which one you meant. The flight crew rest air comes directly from the flight deck conditioned air distribution system. The only AMM for a 777 with that type of crew rest I have access to is for the freighter, and there the crew rest gets conditioned air from the supernumerary area distribution duct - so that'll be the minimum temperature then... For the passenger version I can't be sure, but I'd wager its flight deck conditioned air.

Thanks a bunch!