TBM 930 Oil Pressure Loss

Bug Reporting Hub Aircraft & Systems
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1

Do you have any add-ons in your Community folder? If yes, please remove and retest before posting.

No

Are you using Developer Mode or made changes in it?

No

Brief description of the issue:

Flew a 322nm trip in the TBM 930, to Barcelona. At about 500ft from touchdown, I lost oil pressure. I’ve had this happen once before when I was learning the autopilot still and it basically stalled me out because I didn’t set the throttle, but this time was different, I was on speed at 85-ish kts on approach, I had fuel, about 10 gallons in each tank, and yeah I just lost pressure. I don’t have failures on, I have wear and tear on 100% but those settings never save anyway…

After restarting the engine after getting clear of the runway, I start taxing to the GA ramp as instructed and about 2 minutes after the 1st time, it happened again, while taxiing.

Also, about halfway through the flight, it dropped to like 10fps and stayed there.

Provide Screenshot(s)/video(s) of the issue encountered:

n/a

Detail steps to reproduce the issue encountered:

Taxi - Or approach Barcelona RWY 20 VFR with 10 gal fuel on board

PC specs for those who want to assist (if not entered in your profile)

Xbox Series S

Build Version # when you first started experiencing this issue:

Current as of August 23rd 2021

Are you on the Steam or Microsoft Store version?

n/a

Did you submit this to Zendesk? If so, what is your ticket #?

No

2

If I was down to 10 gals per tank I would be getting concerned. I dont know if the unuable fuel is modeled in the TBM or what figure it is but it soundsl like fuel starvation if the engine stopped especially if it could be restarted and stopped again.

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3

I don’t know… I planned the fuel correctly, and that was 10 gallons on final approach so should have been more than enough to land. On approach I was only burning like 20 or so gallons per hour so I can’t see it being fuel starvation personally.

4

I’m pretty sure 10 gallons is 0 fuel in the TBM. I’ve run out of fuel before around that amount.

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5

I admit I don’t know much about the TBM other than how to fly it in MSFS, so that could be the case. It doesn’t make any sense to me though, why would they show 10 gallons if the tanks are empty? Is there a reserve tank that hold the last 20 gallons or something that I should have switched to?

6

The gauge doesn’t show empty if there’s fuel in the tank.
It’s the unusable fuel.

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7

Why is it unusable?

8

Because the siphon can’t reach it. It’s a mechanical limitation.

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9

Various reasons: E.g. fuel tank shape, fuel pump location, aircraft attitude

Just checked the TBM 930 manual and the unusable fuel quantity is 9USG.

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10

Now that makes sense. But I mean they designed a really nice plane here, how could they miss that? That seems really… amateur to me.

11

Every vehicle has this to some extent. That’s why you read the manual and secondly do proper fuel planning.

1 Like
12

Noted! Still learning :man_shrugging:t2:

1 Like
13

Don’t forget that you always need to carry a lot more fuel with you than just to reach the destination.

Just to name a few:

What do you do if the enroute head wind increases, or the tailwind decreases?
What do you do if you are not the only aircraft at the airport and you need to join a holding pattern?
What do you do if the weather becomes worse so that you need to fly to your alternate airport?

14

Gentleman, I ran into the same problem. But I found the solution, in my case. If I put the mixture -lever in the full rich position everything works fine, putting the mixture lever in the low position and the oil problem returns.
The lever only assigned to the mixture axis.
Hopefully this will help you and return to happy flying.