aborting a enginestart not possibleiam not able to abort an enginestart via the feather-shut-off-buttons as explained in the manualonly after a complete enginestart the feather-shut-off-buttons works as expectedis this a bug?regardsJ

Feathering while the starter motor is still going is likely to cause damage

Yes it will, in a short time the shaft will break. This is simulated too.

Not sure what we're getting at here? Are you pressing the STOP buttons on the overhead panel, or are you moving the Condition Lever to FEATHER?For any abnormalities during start, you should abort with the Condition Levers.Do you mean that you can't get the Condition Lever "Latch Release" buttons to work?

Not sure what we're getting at here? Are you pressing the STOP buttons on the overhead panel, or are you moving the Condition Lever to FEATHER?For any abnormalities during start, you should abort with the Condition Levers.Do you mean that you can't get the Condition Lever "Latch Release" buttons to work?

during the startsequence i cannot press down the LATCH RELEASE BUTTON ,only after a completed startsequence i am able to press down the buttoni thing that is not right?regardJ

AOM Ch41, page 54 (J) Engine Start c) FO Start Procedure c) Engine Start Malfunctions (2) In the case of a start malfunction, the pilot noticing the abnormality shall call, “Abort” and the pilot starting the engine will move the Condition Lever to Feather Shutoff.Pilot_Intro, page 66, LATCH RELEASE Buttons; To move a CONDITION lever from TAXI to FEATHER it is first necessary to push the associated LATCH RELEASE button on the centre console behind the CONDITION lever. Right click to push the LATCH RELEASE in. Left click to release the LATCH RELEASE button (this step is required prior to moving the CONDITION lever out of FEATHER back to TAXI).Can someone who knows confirm that the condition lever shutoff will, in addition to killing the fuel supply, remove power from the starter motor or does some other action need to be taken to prevent further damage?

AOM Ch41, page 54 (J) Engine Start c) FO Start Procedure c) Engine Start Malfunctions (2) In the case of a start malfunction, the pilot noticing the abnormality shall call, “Abort” and the pilot starting the engine will move the Condition Lever to Feather Shutoff.Pilot_Intro, page 66, LATCH RELEASE Buttons; To move a CONDITION lever from TAXI to FEATHER it is first necessary to push the associated LATCH RELEASE button on the centre console behind the CONDITION lever. Right click to push the LATCH RELEASE in. Left click to release the LATCH RELEASE button (this step is required prior to moving the CONDITION lever out of FEATHER back to TAXI).Can someone who knows confirm that the condition lever shutoff will, in addition to killing the fuel supply, remove power from the starter motor or does some other action need to be taken to prevent further damage?

I have read these pages also but cannot push the associated LATCH RELEASE button on the centre console during enginestart : or is this only possible in case of a malfunction?regardJ

Are you right clicking on the button to release it?

Paul,Yes, when the Condition Lever is placed in the FEATHER/SHUTOFF position, the propeller will move to the feathered position, and the Manual Fuel Shutoff Valve is mechanically closed, the Hydraulic, Bleed Air, and Fuel valves are commanded to close electrically, and the the started is disengaged.Jurgen,As Paul mentioned, you need to "right" click the mushroom button in order to move aft past the TAXI gate and into FEATHER/SHUTOFF.

As Paul mentioned, you need to "right" click the mushroom button in order to move aft past the TAXI gate and into FEATHER/SHUTOFF.

Indeed but they can't be depressed if you have already started the start sequence, you need to push the buttons in ready prior to pressing the start button.

i know i have to "right" click the mushroom buttonbut as explained already this is only possibly after a completed startsequenceor do i really have to pressdown the LATCH RELEASE BUTTON prior Enginestart as Jay explains ? that works but is this the real procedure?Nick and Paul can you confirm you can pressdown the LATCH RELEASE BUTTON during enginestart at any time?

I tried it again a few times and (for me atleast) I can press the buttons in while the engines are just being run up (to 10-15% RPM) but as soon as ignition comes on and they ignite I can't press or depress them again until the start master is back to "AIR".

I tried it again a few times and (for me atleast) I can press the buttons in while the engines are just being run up (to 10-15% RPM) but as soon as ignition comes on and they ignite I can't press or depress them again until the start master is back to "AIR".

that is exactly the same i can do,but what is if you get for example a oilpressure failure at 40% startsequence?PS:i have no ''IGN'' CAP Light at 10% startup!Would be nice to hear from a real JS4100 Pilot or PMDG : should i be able to push the LATCH RELEASE button down during the hole startsequence?regardsJ

Paul,Yes, when the Condition Lever is placed in the FEATHER/SHUTOFF position, the propeller will move to the feathered position, and the Manual Fuel Shutoff Valve is mechanically closed, the Hydraulic, Bleed Air, and Fuel valves are commanded to close electrically, and the the started is disengaged....

Are you sure? The AOM manual 8.6 says

When the CONDITION lever is set to FEATHER:- the manual fuel shutoff valve is closed- microswitches cause the LP and HP fuel valve and the LP hydraulic valves to close.

But for the stop button it says:

2. STOP LEFT/RIGHTThe function of the STOP switch is to stop the engine or stop the start sequence. The high pressure fuel supply from the FCU is closed to stop the engine. Electrical power is also removed from the start circuits.

This suggests the QRH is misleading or mistaken on start failures as the pilot needs both the Stop button AND the Condition lever to Shutoff/Feather. Moving the condition lever only will leave electrical power connected while the Stop button leaves LP fuel and hydraulics connected.

Hi Paul, Yes, I'm sure. The STOP switches are used for normal shutdowns on the ground. It causes the Air Purge system to operate (causes increase in RPM and FF), and it relies upon electrical microswitches to close the associated fuel valves. The CONDITION lever, on the other hand, will cause an IMMEDIATE shutdown of the engine using MECHANICAL means to ensure that the fuel Manual Shutoff Valve and LP Hydraulic valves are closed, and the prop is feathered. It also performs the same electrical functions of the STOP switch: microswitches close the LH and HP fuel valves, the LP hydraulic valve is commanded close (it should already be closed), the starter is disengaged, and the bleed air valve closes. The CONDITION lever method is used for ALL in-flight shutdowns, and for any abnormal start or operating condition on the ground, such as a hot or hung start, overspeed, unresponsive/runaway prop, etc.Jurgen,In the real world, you can press the LATCH RELEASE buttons, and feather the prop at any time...there is no inhibit. In fact, the proper method of starting the engine involves the F/O putting one hand on the CONDITION lever, and the other hand on the LATCH RELEASE button as he monitors indications during start. The intent is to be in a position to IMMEDIATELY abort the start in case of an abnormality.I have never tried to abort a start using the CONDITION lever in the PMDG bird, though I have used it to successfully perform in-flight shutdowns. Later today, I'll check and see if I can duplicate your issue.

Hi Nick, While you may well be correct, it doesn't agree with the documentation as I quoted above. Can you tell us your source please?