Overhead Cabin Interior Light

[Scottknoll]

First aircraft, first post! Purchased an Ovation a few weeks ago!! Hoping to get some advice here. Turned the overhead lights on, and the housing melted. Mx manual calls for a GE 1818 bulb, but my bulbs are wedge type bulbs with 194LL printed on them. They don't look like a GE1818 at all. I suspect a previous owner replaced with a different housing and a 14v wedge bulb... All 4 of my overhead lights were identical, prior to melting. Part number of the housing is 914038-001 and I can't seem to locate it anywhere. So my questions are:

Where can I find the correct housing?

Is GE1818 the correct bulb, and why is the form factor different than what is installed?

Thanks!

Scott

[carusoam]

Welcome aboard Scott...

I think you found the problem... a 14v bulb in a 28V socket is going to get extra hot...

Often, in the past... Mooney put 28v bulbs in 14v sockets to produce dim light... for gear position lighting...

As a new owner... you want to pick up copies of the maintenance and parts manuals... 

MSCs are usually the resource to find these electronic copies.... some may be posted online by various MSCs...

See if the search function can find them around here...

Your search may also come up with updated checklists too...

Best regards,

-a-

[Guest]

1 hour ago, Scottknoll said:

First aircraft, first post! Purchased an Ovation a few weeks ago!! Hoping to get some advice here. Turned the overhead lights on, and the housing melted. Mx manual calls for a GE 1818 bulb, but my bulbs are wedge type bulbs with 194LL printed on them. They don't look like a GE1818 at all. I suspect a previous owner replaced with a different housing and a 14v wedge bulb... All 4 of my overhead lights were identical, prior to melting. Part number of the housing is 914038-001 and I can't seem to locate it anywhere. So my questions are:

Where can I find the correct housing?

Is GE1818 the correct bulb, and why is the form factor different than what is installed?

Thanks!

Scott

Hi Scott,

Welcome to Mooneyspace!  Have you got a picture of the part and a serial number for your plane?  
 

Clarence

[Scottknoll]

Ovation SN 29-0135

I do have the part number from the manual, but no one seems to carry it and my local MSC (Weber) says they can’t get it from Mooney, 0 available.

Part number 914083-001


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[Scottknoll]

Picture with the bulb as well, doesn’t look like a GE1818


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[M20S Driver]

Here is a picture from my 1999 Eagle cabin light.  It just happens that I removed it today since it could kill the battery if it is left on accidentally during annual.  The bulb seems to read GE 40 and it is 28v.

[Scottknoll]

That helped immensely, thank you! Now I just need to track down some new housings.

GE 400 seems to be the bulb type.


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[tmo]

If you didn't buy the bulbs yet, perhaps consider seeing if there are reasonable LED replacements available.

 

[Awful_Charlie]

23 hours ago, tmo said:

If you didn't buy the bulbs yet, perhaps consider seeing if there are reasonable LED replacements available.

 

I you do that, you'll either have to accept there is no dimming available, or change the resistors (which are behind the interior trim, i.e. a git to get to!)

[flyingcheesehead]

On 4/11/2020 at 5:43 PM, Scottknoll said:

Picture with the bulb as well, doesn’t look like a GE1818
 

 

Sorry for the necropost...

I have a slightly earlier Ovation (s/n 29-0101, 1997 per Mooney, but 1996 per the FAA since it got its airworthiness certificate in 12/96) and I ran into this same thing. I have the same "wedge" lights pictured here, so I don't think it was an aftermarket thing, I think Mooney switched production and didn't change the manual.

My bulbs had a faint "GE 400" on them. Aero-Lites has these LED replacements: https://www.aero-lites.com/product-page/T10-28V

Hope this helps the next person to happen upon this thread!