What is this? It’s under the left wing tank? Just asking about the color.

[billy hellcat]

Edited May 29 by billy hellcat

[N201MKTurbo]

I would think it is a leaking fuel sender gasket.

[mike_elliott]

The 99-2002’s were some of the worse for tank sealant leaks per Paul Beck. I hear the factory didn’t apply between rib and skin then. In any event, get it checked out and if it’s the sealant, patching will be a temporary fix as it will fail in other areas in short order

[IvanP]

Are you asking about the discoloration or the nub sticking out from the wing surface?

Edited May 29 by IvanP

[N201MKTurbo]

14 minutes ago, IvanP said:

Are you asking about the discoloration or the nub sticking out from the wing surface?

The nub is the speed brake drain line.

[billy hellcat]

The brown color

 

[Hank]

15 minutes ago, billy hellcat said:

The brown color

 

Fuel stains. It's leaking, see above.

[MikeOH]

G100UL

[IvanP]

22 minutes ago, MikeOH said:

G100UL

Kind of looks that way, but I think it would be far worse if he had G100UL in the tank. We would probably be looking at bare metal in some places.

[Pinecone]

10 hours ago, mike_elliott said:

The 99-2002’s were some of the worse for tank sealant leaks per Paul Beck. I hear the factory didn’t apply between rib and skin then. In any event, get it checked out and if it’s the sealant, patching will be a temporary fix as it will fail in other areas in short order

AFAIK Mooney never sealed between the ribs and skins except for a few to try it out.  But they tried to set the rivets with the sealant wet and that did not work well.  It just squeezed out.

 

[billy hellcat]

Is this sealant then?  No fuel is leaking.  

[Fly Boomer]

2 minutes ago, billy hellcat said:

Is this sealant then?  No fuel is leaking.  

It looks like fuel, and it looks like it's been leaking for quite some time.  Recent fuel leaks are blue from the dye in 100LL.

[Ragsf15e]

1 hour ago, billy hellcat said:

Is this sealant then?  No fuel is leaking.  

Agree, it’s fuel.

[flyboy0681]

Yup. Same shade of brown that my leak showed. Time to call Edison at Wetwingologists.

[billy hellcat]

Thanks guys! Appreciate the quick response. I was thinking of buying but not now. Went to deploy speed brakes and they were inop.  Ughhh.  Lots of inop things that weren’t talked about. 

[Geoff]

13 hours ago, N201MKTurbo said:

The nub is the speed brake drain line.

Nope, fuel tank vent line.

[N201MKTurbo]

13 minutes ago, Geoff said:

Nope, fuel tank vent line.

Not even close. Doesn’t even look like the fuel vent. The fuel vent line usually has a small tube welded into a larger tube. And it’s in the wrong place.

[Ragsf15e]

23 minutes ago, Geoff said:

Nope, fuel tank vent line.

The rectangular panel that drain comes out of is another indication that it’s a speed brake drain. That panel comes off and you can access the bottom of the cartridge.

[Geoff]

1 minute ago, Ragsf15e said:

The rectangular panel that drain comes out of is another indication that it’s a speed brake drain. That panel comes off and you can access the bottom of the cartridge.

Perhaps the OP can advise if speed brakes are installed...

[N201MKTurbo]

8 minutes ago, Geoff said:

Perhaps the OP can advise if speed brakes are installed...

He said above that the speed brakes don’t work.

[Geoff]

4 minutes ago, N201MKTurbo said:

He said above that the speed brakes don’t work.

I suppose that settles it. 

14 minutes ago, Ragsf15e said:

The rectangular panel that drain comes out of is another indication that it’s a speed brake drain. That panel comes off and you can access the bottom of the cartridge.

Perhaps the OP can advise if speed brakes are installed...

[Pinecone]

Pilot - Logs discrepancy - Speed Brakes Inop

Mechanic - Speed Brakes Not Installed. 

 

[PT20J]

Speed brake drain. Fuel tank vent is ahead of the spar.

[47U]

Upside down was driving me nutty…

[EricJ]

2 minutes ago, 47U said:

Upside down was driving me nutty…

Well now it's definitely gonna leak.