Map Light

[blaine beaven]

Hi,

I recently bought a 78J. In the pilot yoke, right horn there is a white button labelled map light. It pushes in and spins.

When I depress it or spin it no light comes on. I am guessing the bulb is burned out. What I am wondering is where the bulb is located, so I can change it.

Thanks!

Blaine

Sent from my iPhone using Tapatalk

[jfdez]

The bulbs is in the yolk itself.  Shines from below it.

[kevinw]

I had the same issue when I bought my J. Looked all over for it. Turned out the light was actually on, just very dim and unnoticeable in daylight.

[blaine beaven]

Ok thanks. I have flown it at night and haven't seen it on or light up, so I am guessing it is burnt out. I've noticed a small hole in the bottom of the yoke... something to investigate next summer, when it isn't freezing out!

[M20F-1968]

If it is like mine, the nav lights also must be on for it to operate.

 

John Breda

[OR75]

You access the bulb by removing the front Mooney placard/cover in the front of the yoke . Helps to read paper sitting on your laps if you still do that.

[dcastor]

Great topic... I've wondered about this button myself, but as I've had other issues to worry about this one didn't yet reach the point where it concerned me.  I'll have to try it with the nav lights on and in the dark.

[PTK]

Is there an LED replacement for this bulb?

[kortopates]

Is there an LED replacement for this bulb?

 

Yes, you can get LED versions of the bulb from Spruce or any of the big electronic outlets (Mouser, Digikey, Newark etc). I use an LED bulb in my yoke light.

 

Often the map light stops working when the bulb is still good. The base of the bulb can get a little corroded; especially within a loose socket that just needs a little finger tightening. Sometimes the entire bulb and screw in circular metal retainer both fall out together onto the floor and become lost. Plus its not unusual for the pilot to have no idea what the little retainer found on the floor belongs too and then it never finds its way back before becoming permanently lost and forgotten. So if you don't see a bulb, and just an open whole, look all around the cockpit floor carefully and you might get lucky.  

[LANCECASPER]

Any idea what the GE or led part number is on this bulb?

[LANCECASPER]

Ok, I'll answer my own question. It looks like this part number (11-09629) from Aircraft Spruce (LED Replacement) will replace the map lights in the yoke and the landing gear indicator light on the floor also. I'll know for sure when I get them in a few days.

[BorealOne]

And what part number was that?

[LANCECASPER]

And what part number was that?

11-09629

[OR75]

Is the led light much brighter than the incandescent ?

It would be a good feature for the gear indicator

[Rustler]

Might look at https://www.superbrightleds.com/search/led-products/T1-3%204/.

[LANCECASPER]

Might look at https://www.superbrightleds.com/search/led-products/T1-3%204/.

 

I did, but the only one that they have that has the correct base is this one:

https://www.superbrightleds.com/moreinfo/subminiature-bulbs/led-product/11/

 

It should work for Mooneys with 12v systems, but I couldn't find one for 24v, which is what I needed.

[LANCECASPER]

Ok, I'll answer my own question. It looks like this part number (11-09629) from Aircraft Spruce (LED Replacement) will replace the map lights in the yoke and the landing gear indicator light on the floor also. I'll know for sure when I get them in a few days.

The LED map lights came in from Aircraft Spruce and I replaced the pilot's side. Make a big difference in the amount of light plus should never have to be replaced.  Next I want to replace the one in the Gear Down indicator.

[DonMuncy]

For you guys talking about the gear down indicator light, bear in mind that the K  model book (erroneously in my opinion) call for a 28 volt bulb for 12 volt planes.

On my plane, even though the light functioned, it was so dim as to be totally useless. I replaced it with the 12 volt equivalent, and it is now great.

[NotarPilot]

I am missing the little assembly that screws in under the yoke and holds the bulb in place. Is this a metal piece? And does anyone think it could be 3D printed with plastic?

[LANCECASPER]

I think you'll find something that will work here:

 

http://sloanled.com/indicators/downloads/SloanLEDIndicatorsCatalog.pdf