Hi all,I'm just in line with all the people out there having problems with the JS41 engine startup.I'm through the AOM and I fully understand how the startup should work and how to handle the start locks properly . I'm able to startup the engines and to give her a nice spin around the block...but... I've to do that before the props move into the feathered position!When the props are in feathered position (by intension or accident) I can't bring them back with the unfeather pump into the un-feathered position required to startup the engines without killing the starter. The pump just don't work and it never had with my JS41.I've NO Idea why it does not work.Reading through all the guides and tutorials and such always showed that the pump schould work without any problems.It is operated by electricity, so maybe someone could describe to me how to energize that pump properly.I never found a complete description what switches must be set properly or what other conditions must be reached to get that pump unfeathring the props! BestStephan

Stephan,How long are you waiting to perform the startup after actuating the unfeather pump? It should take about 20 seconds for the prop blades to unfeather, and you can watch them do so from the outside view. Zoom in close, and you'll be able to see them slowly unfeather.

Stephan,How long are you waiting to perform the startup after actuating the unfeather pump? It should take about 20 seconds for the prop blades to unfeather, and you can watch them do so from the outside view. Zoom in close, and you'll be able to see them slowly unfeather.

Nope. Waited for more than 10 min.Nothing is moving, turning or something.Wether left nor right ....Sorry.PS:Today I had problems with the startup after loading the tutorial.Starter just was able to bring the engine up to ~50% rpm within roughly one minute (ver very slowly crept up to that level, looked like it gets no fuel but fuel pump was engaged, and pressure was ok...!?).Then the the Start Master switch flipped back to Air and the engine spun down.Afterwards the engine did not start at all anymore and the Start Master switch always went back to Air a couple of seconds after pressing the Start Button. Same behavior with both engines.Weired.BTW: This occured after I had to reload the tutorial 'cause I blowed both engines simultaneoulsy while careless taxing aorund....

Well I don't even look at the props .... I just go through the procedure and it starts every time. If you miss a small detail ..... you smoke it! This is my procedure .... your mileage may vary:

1. Hold F2 down until the throttles are all the way back to feather position, Condition Levers to Taxi

2. Click the Unfeather Switch in both Left (click) & Right (click) positions, wait 10 sec

3. Then click F1 (inserts "Start Locks")

4. Start the left engine, let stabilize, then start right engine, let stabilize

Then Remove the Prop Start Locks

1. Pull the left throttle all the way back slowly, then F1

2. Pull the right throttle all the way back slowly, then F1 (you will hear "Start Locks Removed")

All Electrical switches back on

Yep, but I checjk the props :So I click the unfeather switch to Left then look outside and see the props unfeathering.That's my cue

I am guessing that you are not placing the power levers into reverse before operating the unfeather pump. You have to allow the prop to unfeather completely before you place the lever back in the idle position (or F1 key...)I usually load a flight with a default Cessna, shut off its engine, then load the JS41. During the first few seconds of loading, I find the props are in the correct position IF I set full reverse during the loading phase. At the end of the loading phase, I then hit F1 to set the levers to idle again.Andrew

I usually load a flight with a default Cessna, shut off its engine, then load the JS41. During the first few seconds of loading, I find the props are in the correct position IF I set full reverse during the loading phase. At the end of the loading phase, I then hit F1 to set the levers to idle again.Andrew

I was having the same problem as Stephan so I decided not to load the flight with a default plane but load the JS41 straight away (I have all PMDG's products and have never found loading a default to be necessary). When loaded the JS41 engines will be running so I go through the shut-down procedure, one engine at a time, pressing the stop button then quickly down to the pedestal and pull the power lever back into reverse. Then, having done both engines, move the power levers back to their normal position. Both props stay unfeathered for as long as the plane stands there.Since doing this I have never had an engine start problem.Iain Smith

Glad that your method works Iain... would be interested as to how long you need to wait until the EGT is low enough (>200

Hi All.

1. Hold F2 down until the throttles are all the way back to feather position, Condition Levers to Taxi

2. Click the Unfeather Switch in both Left (click) & Right (click) positions, wait 10 sec

3. Then click F1 (inserts "Start Locks")

4. Start the left engine, let stabilize, then start right engine, let stabilize

That is exactly what I Do!But before starting the engine I look outside the window (or look at a separate window showing the plane from a side view) to make sure the props are properly un-feathered.Following this procedure right after laoding the JS41 will leave me with 2 nicely running engines (no need for the pump 'cause the props are still un-feathered during that time).Following this procedure ~2-3 Minutes after loading the JS41 will only bring up the PRM to ~50%. The Startup Sequence will be terminated after ~60sec, leaving me with a engine spinning down and with EGT at ~450 (props caused some drag preventing full RPM because they actually were on their way to become feathered)Following this procedure >10 Min after loading the JS41 will leave me with 2 burning engines (If I start them with the then FULLY feathered props of course). If I put the props on the locks using F2 (while the JS41 is loading) and F1 (after the plane was loaded completely), that leaves my with two properly un-feathered and locked props. Now I can take all my time to prepare the plane as described in the manual.Starting up the engines afterwards is usually no problem. But if I shutdown the engines without engaging the locks properly, by intention or by accident, they remain feathered regardles what I try afterwards. That was the reason why I stated 'The pump does not work (on my site).Question:Is there anybody out there who can assemble a DETAILED checklist or procedure that shows what conditions must be met and/or what actions must be taken to un-feather the props and to put them on the locks properly by using the un-feather pump switch regardless in which state the JS41 actually is?The above quoted procedure seems to be incomplete.What about...- Required Switch positions (GPU, GEN, BAT, EMRG, ESS, ICE, LIGHTS, AVIONICS, etc)?- Required Gauge readings (EGT, FuelPressure, OilPressure, HydraulikPressure, BAT/GEN/GPU Volts and Amps, etc.) and annunciator indications (ELECT, etc.)?- Other Required actions?- etc.To give us all a similar starting point (for describing and/or testing the procedure) I would suppose to do the following:1: Loading the original Tutorial manually into FSX (Do nothing until the Tut is fully loaded)2: Quit the flight (just the actual flight not the FSX)3: Load the original Tutorial again (Do nothing until the Tut is fully loaded again)4: Wait 10min (Don't touch anything though it wil drain your two BAT quite a bit, get yourself a big pot of coffee)This way any residues of a fromer engine fire incident or otherwise mixed up sim parameters should be nullified by loading the Tut twice. The props should be properly FEATHERED! now (That means that operating the pump is REQUIRED to get the props back on the locks for startup).From that setup I NEVER was able to un-feather the props (using the pump) or start the engines succesfully (as expected with fully feathered props of course).Happy reproducing...BestStephan

DETAILED checklist or procedure that shows what conditions must be met and/or what actions must be taken to un-feather the props and to put them on the locks properly regardless in which state the JS41 actually is?

You might be making it more complicated that you need. You can start the JS41 on batteries only if you don't tarry ... by turning off much of the electrical:

Electrical switches off:

1. Windshield/Air Data/Icing off (usually only 4)

2. Avionics Master off (2)

3. Generators off (2)

4. Fuel pumps (on)

Then start the engines normally.If you've had a fire and put it out with the extinguishers you might be able to restart. If you've just ended a flight and want to create another ... you might need a Manual Start, I don't know. I'm usually ready for a cup of coffee but if not it's simpler to just exit and reload FSX so it comes back with the default 172. Then I know things will work properly ....

Glad that your method works Iain... would be interested as to how long you need to wait until the EGT is low enough (>200

Hmm.., seems there are lots of ways to start from feathered props!Never had a problem with the un-feather pump. Batts on, connect GPU, Gens on, avionics masters on, wait for IRS to run up, FMS on, set up route/ nav as required. When ready to start engines move power levers towards reverse until rev captions come on then press F1, turn off avionics masters, turn off gens, turn on fuel pumps. Select starter to left engine, left click un-feather pump, change to outside view and wait for left props to stop moving (about 15-20 secs), change to VC view and press left engine start. Watch engine display and wait for it to run up. Once its settled turn left gen on, turn GPU off and disconnect. Select starter to right engine, right click un-feather pump, change to outside view, check right prop blades as before, back to VC and click right engine start. Once engine has run up turn right gen on, avionics masters on, anti-ice as required, fuel pumps off, job done.Gens on before engine start may not be strictly necessary as GPU should power busses but it doesn't hurt. Oh, I always load the Jetstream after loading a shutdown King Air default, just in case.Doing it this way means no need to worry about start locks (they never engage), so once engines are running just taxi, set props to flight and take off.Obviously if you shut the engines down and expect to start them again in the same FSX session you shouldn't need the un-feather pump if you follow the manual or the sticky guides!!Nick Theobald(un-professional pilot)

I take your point Andrew but by time I've done all the planning, FMS, pre-flight the engines are cool enough. Problem was doing it your way I could never get it to work, the blades would not stay unfeathered for more than a minute! :( Iain

OK. I remember a similar thing happening to me at the very beginning. After having operated the unfeather pump, I didn't allow the blades enough time to unfeather fully. F1 caused the blades to drop back to the feathered position...At the end of the day, the important thing is to find out what works for the individual. There seem to be numerous ways of getting to the correct start point...ThanksAndrew

HelloI have a bluetooth headset connected to the computer.The answer call/hangup button does not work.Can you please help me with this? Best regardsJeppe

What does your BT headset have to do with the JS41?You might wish to contact the manufacturer of the headset for support... certainly not here, and not in a post about something else...Strange request...Andrew