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DeftDriver

Master Caution flashing on approach

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Does anyone else get a flashing master caution light when maneuvering for approach? It seems like when I pull the throttle to idle on approach to get down to approach speed and then apply some throttle to maintain that speed I always get a constantly flashing master caution. I can hit the light to cancel it but it usually comes on again with my next throttle adjustment. It can be very distracting especially when landing at night. I have prop RPM at max during approach. Is this correct?

 

I have checked my switches and I have no other warnings. My flaps and gear are lowered at the appropriate speeds and I'm using the approach speed specified in the tables. Any ideas?

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Do you have a video of this by chance? I've been flying the TBM850 for awhile now and haven't seen this behavior before.

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Same issue... can't seem to find what's tripping the master caution.

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Pressure? I usually set it after departure and again at the start of decent.

 

That might make it go off?

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I also have the same issue. 

I always believe it has something to do with speed but I don't know what or how because often it goes off when I add throttle... I however don't see any red numbers. 

 

When I turn it off, it comes back, usually while working the throttle. When I'm in a stable decent, and don't have to touch the throttle, the alarm doesn't go off. 

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Some aircraft will give you a caution light when you drop the landing gear or lower the power past a certain point and you do not have the props at full pitch. the remedy is to go to full pitch on the props. The Caution light will either go out by itself or allow you to cancel it by pushing on the light. The reason it does this is so that you will be at full pitch and able to go full power just by moving the throttles or power levers in the event of an emergency go around. I do not have the TBM 850 so I cannot test it for you.

 

Greg

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Pressure? I usually set it after departure and again at the start of decent.

 

That might make it go off?

 

yes,  Pressure  !!

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yes,  Pressure  !!

Is that what it was??? i usually take off with pressure at airfield elevation, Once im away with now issues and looking good, I change it to Cruise + 1000ft, 

When in the decent i then change it to landing field elevation.

 

Cheers.

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Not sure if pressure is it for me because I always notice it when I throttle up during approach. Even with rpm and mixture to full. 

As long as I don't touch the throttle, no alarm but sometimes when I throttle up, the alarm goes off, only after a couple of seconds. 

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Anybody find an answer for this idiotic light to keep coming on?

 

I had what I thought was the most recent edition installed in to P3D till I discovered the FLC was inoperable so I uninstalled & reinstalled the latest V2 (twice) & now I have this happening. It wasn't an issue with the previous install. Can't see any reason for it. I can sit on the runway & doing various throttle movements such as reverse or coming out of reverse & into forward can cause this activation. Even before getting off the ground so I don't believe pressurization has anything to do with it.

 

I had hangered this aircraft some time ago & only recently resurrected it as I could flick the troublesome G1000 for the GTN750 & with some tweaks was getting it flying quite nicely. However this light constantly illuminating now is so annoying if I can't fix it then it's back to the hanger & off the hard drive for it.

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Don't have it presently installed but a MASTER CAUTION (don't know why you call it idiotic) is only an indicator that there's a specific amber caution message on your PFD and/or MFD.

Have you tried to find out which associated message comes on when the caution light appears?

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Hi Polizei,

 

Thanks for your reply, I'm fully aware of what a master caution light is for being a RW pilot (not the TBM). There is no message on the CAS. It's a glitch in the aircraft which has not existed in the earlier versions & I was asking if any of the previous posters had found out why it keeps coming on & what they did to rectify it if they were able to at all? The posts appeared to end with no offered solution apart from possible pressurization which is glitchy & comes on quite regularly whilst in climb out. The system cannot keep up with the aircraft.

 

The reason I called it idiotic is because there is no logical reason for it to be coming on when it is & after spending considerable time trying to get this install set up & flying somewhere near to being suitable this happens. Just frustration on my behalf.

 

Might try another complete uninstall & reinstall if I can't find the cause although I have spent too much time as it is trying to get this aircraft to perform anywhere near how it should. Certainly can't fly it with this flashing in your face constantly.

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Send me a PM with your email address and I'll send you some G1000 mods I made a long time ago for this aircraft.  Try them and see if it is better.  The pressurization system was modified, I recall.

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Hi Bert,

 

Thanks for your reply.

 

I did get those from you some time ago but it seems this problem is with the latest V2 update.

 

If I get this thing working & don't consign it to the scrap heap I'm intending to install the GTN750 in any case. It was working quite nicely in the earlier V2 build I had however the FLC mode was not selectable. Not that it works very well in any case. Set a speed of 130Kts & it sits at 155Kts instead!

 

I have looked further into the master caution light problem & it appears to activate as my throttle comes out of idle either into reverse or forward. If I have idle down to around 6% the light goes out, but as soon as I move the throttle forward or into reverse it comes on again.

 

I have reinstalled a couple of times. This happens both in P3Dv3 & FSX-SE.

 

Am re downloading the latest file again & will try a new install.

 

Did your mods fix the pressurization problem or was that supposedly fixed with the latest update?

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I did change the pressurization system, so that the cabin altitude can change at 1500 ft/min instead of 500.. and some other minor changes which Carenado may have included in their V2 update.. do not know.

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Hi Bert,

 

Well the new download made no difference. The light continues to come on once out of idle whilst on the ground. On take off I can turn it off by pressing the button & it will remain extinguished however lights up again as soon as revers is selected after touch down.

 

Will the rate of change for the pressurization system still work even if I install the GTN & disable the G1000? I was having the pressurization problem with the earlier v2 but due to the master caution issue I haven't yet flown to any height to test if this problem has been rectified with the latest version. I noticed they did fix the TOGA pitch attitude to 7.5 deg. & changed the initial VS to zero which I tend to do with most of my aircraft.

 

Have found the warning light occurs in both P3Dv3.4 & FSX-SE. I have the previous version in P3dV2.5 & it works fine.

 

Have lodged a ticket with Carenado.

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You'll have to try my GTN mod and see.

 

If not, I can give you something to fix it.

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OK Thanks.

 

Have your GTN mod also. Will try it out when I get a chance.

 

Maybe later today.

 

Thanks for your help as always Bert.

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OK Thanks.

 

Have your GTN mod also. Will try it out when I get a chance.

 

Maybe later today.

 

Thanks for your help as always Bert.

 

Send me a PM with your email address requesting a new copy..

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Just checked the RW manual and except for the oil pressure there's shouldn't be anything that triggers the master caution or warning in this particular case.

Maybe when selecting reverse the oil pressure drops during the transition but in this case the caution should disappear without the pilot having to cancel it.

Btw, that's a problem with many add-ons that the master caution/warning remains on despite the fact that the cause for its illumination  isn't there anymore.  

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