flyboy0681 Posted April 26 Report Share Posted April 26 The landing gear bulb burnt out and my partner pulled this out of the panel. When I conduct a search on the part number, CM7338, the mount is completely different. What is the correct part number? Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted April 26 Report Share Posted April 26 I believe that i# the correct part number. I think your confusion is caused by it being a rare bulb and some incorrect postings on EBay. Quote Link to comment Share on other sites More sharing options...
PT20J Posted April 26 Report Share Posted April 26 It looks like the current Chicago Miniature 28V bulbs are either a 7387 (3 mm pin spacing) or a 7839-2 (2.5 mm pin spacing). https://cml-it.com/us/products/lamps-signalisation/bi-pin/pin-abstand-254mm/ International Avionics makes the annunciator panel. You could call them to verify. https://www.internationalavionics.com Quote Link to comment Share on other sites More sharing options...
flyboy0681 Posted April 26 Author Report Share Posted April 26 28 minutes ago, PT20J said: It looks like the current Chicago Miniature 28V bulbs are either a 7387 (3 mm pin spacing) or a 7839-2 (2.5 mm pin spacing). https://cml-it.com/us/products/lamps-signalisation/bi-pin/pin-abstand-254mm/ International Avionics makes the annunciator panel. You could call them to verify. https://www.internationalavionics.com Thanks for the replies guys.. This is so very confusing. How could the two pin be mislabeled? I'll contact International and see what they say. Stay tuned. Quote Link to comment Share on other sites More sharing options...
PT20J Posted April 26 Report Share Posted April 26 2 minutes ago, flyboy0681 said: Thanks for the replies guys.. This is so very confusing. How could the two pin be mislabeled? I'll contact International and see what they say. Stay tuned. It's certainly not mislabeled. But it could well be an obsolete part superseded by a newer part, or simply discontinued. This happens all the time especially with parts that are 41 years old. Quote Link to comment Share on other sites More sharing options...
flyboy0681 Posted April 26 Author Report Share Posted April 26 3 minutes ago, PT20J said: It's certainly not mislabeled. But it could well be an obsolete part superseded by a newer part, or simply discontinued. This happens all the time especially with parts that are 41 years old. Good point. Quote Link to comment Share on other sites More sharing options...
PeytonM Posted April 26 Report Share Posted April 26 I’ve got a few of these from my J annunciator panel (28V) which I could mail you. I’ll check part # over the weekend and post it. Quote Link to comment Share on other sites More sharing options...
M20S Driver Posted April 27 Report Share Posted April 27 https://www.aircraftspruce.com/catalog/elpages/aml11-12419.php Here is what I bought as spares. Did not need them yet since there are many on the box that are not used Quote Link to comment Share on other sites More sharing options...
flyboy0681 Posted April 27 Author Report Share Posted April 27 21 minutes ago, M20S Driver said: https://www.aircraftspruce.com/catalog/elpages/aml11-12419.php Here is what I bought as spares. Did not need them yet since there are many on the box that are not used What about 14 volts? Quote Link to comment Share on other sites More sharing options...
M20S Driver Posted April 27 Report Share Posted April 27 3 minutes ago, flyboy0681 said: What about 14 volts? https://www.aircraftspruce.com/catalog/elpages/aml11-12463.php Quote Link to comment Share on other sites More sharing options...
flyboy0681 Posted April 27 Author Report Share Posted April 27 17 hours ago, M20S Driver said: https://www.aircraftspruce.com/catalog/elpages/aml11-12463.php Done, thanks. Quote Link to comment Share on other sites More sharing options...
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