A little help without giving the answers:Q6: The question ask about the valve position, not the switch, the valve can be either CLosed or Open. In auto position is the aircraft that decide when is open or closed, related to the switch condition on the panel. In normal condition the valve is closed, will be opened when required.Q7:Look at the other lights on the panel... there are some for packs, some for bleeds... When a light is ON (assuming we are not recalling it)it means that something is not working. For example, Bleed trip off is the light that indicates that the bleed was automatically closed for protection.Now, we are inflight, in climb, flaps are not up, we need thrust to accelerate and less drag as possible, Our pack light is now ON....Another help: check the differences between -6/700 panels, and 8/900 panels about temperature control in cabin, we are now speaking of 8/900 aircrafts.... When you see differences and when you see the lights, you will see that answer is in the question.I cannot say more... :)

Isol valve open, because right pack is on "high" and pressure is still the same in both sides? Not sure though.second question, Id say answer 3.

Another help on Q6:Picture resumed from another topic. It shows the logic of the ISOLATION VALVE.About question Q7:Location of Air Mix Valve on the panel (6/700)And the difference from the longer versions (8/900)And the RAM DOOR:Now a short description to all the things in the questions:Bleed valve: is the valve that supplies pneumatic pressure (from engine or APU) to the pneumatic system, this valve has some protections to prevent damages, when it goes in protection mode, The bleed will trip off.Pack: is the air conditioning core, is what creates and condition the air to supply in the cabin. It is different in construction and operation from 6-700 to 8-900.Mix Valve- On the shorter planes Air conditioning is accomplished by 2 separate packs, one mainly controls temperature for cockpit, the other for cabin.A double valve (one open, one closed, mechanically interconnected) open "cold" and close "hot" air or viceversa and modulates to have, at the exit of the system, the correct mix of cold and hot air at the right temperature.On longer versions both packs are normally working to provide the coldest temperature demand, then a TRIM AIR system will heat the 2 sections that requires warm air. The system is so different that do not requires mix valve to operate.RAM AIR DOORThe ram air system is used to cool the air for pack usage, this door has a little flap that opens on ground, when the door is always fully open, this providing a protection for object damage eventually launced by the nose gear when on take off or landing roll.When in flight at low speed (so with flaps) the door is still fully opened but with the deflector flap retracted (less air resistance, more airflow inside)Wiith flaps up, the door will modulate to mantain temperature efficiency in the heat exchanger. In this configuration, more the door is closed, less is the drag.The heat exchanging is required to cool the air inside the pack, it is almost the core of the system as if there is no heat exchange, the pack will not work.The ram door position is shown only when fully opened, on ground and initial climb (with flaps)

Q6: openQ7: related pack valve automatically closes and mix valves drive full coldBert Van Bulck

Answers to questions 6 & 7.6. Closed. ( AUTO closes isolation valve if both engine BLEED air switches are ON and both air conditioning PACK switches are AUTO or HIGH )7. "The left pack valve is closed and the related air mix valves are full cold"A special thanks again to Andrea for taking the time to explain things even more. Keep up the good work.Your input is very welcome.I will stay on this subject a little longer just to make sure folks can nail it.The previous answers should make these 2 easy !Questions 8 & 9.

Q8: Open as right bleed is closedQ9:Right pack is overheated.Thanks RYR for all your efforts and also thanks to davierosoft

Thank you Frederic! I will continue to post, I have 2 pictures right now to post:A question, are you sure about Q7?As it is a "long" version (8/900) it doesn't have a trim valve and as far as I know, in flight, a pack shut down reposition the relative ram door to fully closed to reduce drag.Thank you for this great topic, quiz are very useful training sources of information because if you don't already know the answer, you will search for it.

For Isolation valve logic, another explanation on how to use the schematic I posted.It is a schematic on how it works, it is not the real wire routing, but only the logic of it. However the wires and switches are almost the same.So, to understand it we need to think that it is an electric circuit made of a power source (It is an AC, but now we can immagine a battery) and a series of switches, after all of them there is a motor that can turn either in up or down (open or closed) position.When we power the Close coil the valve closes, when we power the open coil we open the valve.Now, by drawing a battery on the circuit and connecting the plus and minus, we can draw the lines where the voltage and or current passes.I used the above scheme to draw the lines:As you see if all switches are as posted in the drawing, the current passes to the close coil and the valve closes.Now, think about the last switch (ENG 2 BLEED AIR SW) and put it off, draw current lines and see where it goes.

Q8: Open as right bleed is closedQ9:Right pack is overheated.Thanks RYR for all your efforts and also thanks to davierosoft

Thank you for answering, the "game" is good if there are also answers, correct or not, they are all training informations.The only thing I can suggest to whoever don't know an answer is to make a search on the pmdg manuals, or over the b737 technical site, or also on this forum, as to learn things about this plane you must read the manuals.

Q8: Open as right bleed is closedConfirmed must be open (and not stuck closed by a fault) by seeing that the Left and Right Duct Press are equal, (with left bleed open & right bleed closed)

you see I'd know a lot more about this plane if AoA would start releasing more videos!

you see I'd know a lot more about this plane if AoA would start releasing more videos!

Its a shame that PMDG were not able to include the "Boeing 737 Flight Computer Based Training" with their FSX 737NGX release.Looks like Frederic has a recent version.

Q8: Open as right bleed is closedConfirmed must be open (and not stuck closed by a fault) by seeing that the Left and Right Duct Press are equal, (with left bleed open & right bleed closed)

As I told, sometimes the answer is in the question. (Or in the picture of the question).I was reading my previous post made at 4.30 AM (italian time) after few glasses of wine and beer... :(

I was reading my previous post made at 4.30 AM (italian time) after few glasses of wine and beer...

Wine and beer ! Not the best combination, especailly at 4:30 in the morning No wonder you were still up.

Wine during dinner, beer after it... and some liquors :)I'm still alive! :D