Hi Webestereo,

Well, I use FSX but I think it works the same way. So, I will try.

You can use APU ( the switches are at Flight Engineer right panel ) or connect to electrical power and bleed air external sources.

After you get auxiliary power, the engine starting procedure is the same.

If you prefer to use external sources, press [BA] and [EP] buttons at [SimIcons panel] (shift+1).

1) Go to Flight Engineer (upper) Panel and check if [EXTERNAL POWER] [AC CONNECTED] switch is on. If not, turn the [GRD SERVICE] switch to ON.

2) Turn [ESSENTIAL POWER SOURCE] knob to [EXT PWR].

3) Turn [SYNCHRONIZED WHEN LIGHTS ARE OUT] knob to [EXT PWR].

4) Open the fuel valves and turn on the pumps.

5) Go to central console and rise the [MIXTURE CONTROL LEVER] [number 1] to [START] (+/- 50%). They are located below the throttle levers.

6) Go to overhead panel and turn [ENGINE START] [number 1] switch to GROUND and then turn [CONTINUOUS IGNITION] switch to ON.

7) After engine starting, rise the [ENGINE MIXTURE CONTROL] lever 1 to [IDLE] (100%).

8) Repeat the procedures to the others engines.

9) After they are all running, return to Flight Engineer Panel (upper and lower) and turn the [ESSENCIAL POWER SOURCE] knob to GEN3 and do the same thing at [SYNCHRONIZED WHEN LIGHTS ARE OUT] knob.

10) Check if all GENERATORS red lights are turned off.

11) Disconect [EXTERNAL POWER] switch and [BA] and [EP] buttons at [SimIcons panel].

PS: About your second question I think it is not possible to disable the dialogs sounds.

Hope this help.

Pinatubo.

PS2: Sorry guys, but yesterday I made a mistake about B-727 APU. Yes, there is a auxiliary power unit. Post edited.