What does this Switch do?

[flhelo]

Help,

68 M20G, I can't remember what this switch does. Any help would be appreciated. The previous owner had told me what it does, but that was about 8-10 years ago.

[hmasing]

That's the engine eject switch.  If you have any engine troubles, it activates explosive bolts and throws the engine clear of the airframe.

Also, I may not know what I'm talking about.  :-)

[ArtVandelay]

From the picture, it tells you to refer to the owners manual, did you?


Tom

[carusoam]

That fancy switch is unfortunately un-original...

Even though it looks like a fancy weld job to the airframe...

Chase its wires before throwing the switch...

otherwise process of elimination is your friend... 

Got a list of all the things your plane has?

Best regards,

-a-

[RLCarter]

If you haven't used it 8~10 years, it must not be very important.......

[takair]

Couple of guesses.  Backup avionics master or shower of sparks override for hand starting.  These were hidden under the removable panels on some planes so some folks relocated to a practical location.

[Marauder]

But if you do figure out what it does, please tell us. The suspense is unbearable.

 

 

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[orionflt]

I had a pulse lite system that the previous owner had the switch installed in the same area

 

[PT20J]

We have a few like that in the museum DC-3. If you figure it out, let us know -- maybe it will give me a clue to ours 

[StevenL757]

5 hours ago, hmasing said:

Also, I may not know what I'm talking about.  :-)

But you probably stayed at a Holiday Inn Express last night...

[Oscar Avalle]

In my Mooney a similar switch was for the strobes...


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[HRM]

10 hours ago, Oscar Avalle said:

In my Mooney a similar switch was for the strobes...

1. Turn lights out in hangar.

2. Turn on master.

3. Flip unknown switch and see if a light comes on.

4. If no light, listen for noise.

[Marauder]

I'm betting its for nitrous. 

[flhelo]

Thanks for all the great and "Informative" replies. I was finally able to get a hold of the previous owner and the switch is Non Functional that either the first owner had put in or the factory did!!!

Thanks again for all the replies.

[GDGR]

You could now tell your passengers that it isolates your headphones, so all you can hear is ATC. 

Flip the switch, then really hear what they have to say about you....

[Jim Peace]

21 hours ago, Marauder said:

But if you do figure out what it does, please tell us. The suspense is unbearable.

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[Captnmack]

I believe it is for foot well illumination to assist in selecting fuel tanks at night....

[GDGR]

12 minutes ago, Captnmack said:

I believe it is for foot well illumination to assist in selecting fuel tanks at night....

Even if it isn’t, I like that idea for fuel selection, and flap/ trim indicator. 

[Prior owner]

19 hours ago, Captnmack said:

I believe it is for foot well illumination to assist in selecting fuel tanks at night....

I have a footwell light... did any come from the factory with one?  what switch is it normally connected to? Mine isn’t working at present...

Edited March 11, 2019 by PilotCoyote

[Culver LFA]

19 hours ago, Captnmack said:

I believe it is for foot well illumination to assist in selecting fuel tanks at night....

On my 67 F the fuel selector lamp is on the same circuit as the panel lights.

[carusoam]

Everyone with a fuel selector on the floor should have a footwell light....

I found a dead bulb in my 65C’s... when I happened upon the light...

It is there to continuously light the fuel selector switch...

A hidden switch for the hidden bulb wouldn’t make much sense...

By the way... everyone should have a document in their POH that shows an electrical drawing that has all the switches, CBs, and what they are connected to....

Any additions are easy to document there as well....

PP thoughts only...

Best regards,

-a-

[orionflt]

51 minutes ago, carusoam said:

By the way... everyone should have a document in their POH that shows an electrical drawing that has all the switches, CBs, and what they are connected to....

LMAO... yea right!!!

[HRM]

On 3/11/2019 at 3:48 PM, orionflt said:

LMAO... yea right!!!

...and that diagram becomes more inaccurate in direct proportion to the age of the Mooney!

[Stephanie]

What a great spot to add the switch you've always needed a spot for.

[Shadrach]

On 3/11/2019 at 2:02 PM, PilotCoyote said:

I have a footwell light... did any come from the factory with one?  what switch is it normally connected to? Mine isn’t working at present...

Mine has one. It’s factory. It just adds a small amount of diffused light to the footwell.