DIY: How to repair 747 Wingtip Antennas - DA.C
 

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Old 07-16-2020, 07:49 PM   #1 (permalink)
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Default DIY: How to repair 747 Wingtip Antennas

Some of you may have seen my little DIY on antenna repair in some of the Facebook Groups, but I thought I would put it here as well to keep it archived for the community's use.

Have a 747-100/200/300 with broken wingtip antennas? Here's a somewhat easy way to fix it if you are crafty. Note: this was done to an SMA United 747-100 but would be the same size on a Big Bird, Blue Box, Aeroclassics or Aviation 400 mould.

Get a thin sewing needle and try to dull the sharp tip a little with some gritty sanding paper. Measure the length of the original unbroken antenna (if applicable). Compare that to the broken one and subtract and length if there is a stub left. If you have no antennas left on either wing, just make a best guess at the length. Mark where to cut with a sharpie. Snip the needle with a pair of pliers that have clippers built in (or other heavy duty cutter). Be careful not to lose the tip of the needle as it will go flying away as soon as it cuts. I cupped my hand around it so that I could catch it but u could aim it at a paper towel or some cloth too.



Carefully add some liquid super glue to the broken end of the antenna. If u squeeze out too much, use the top of your finger nail to dab or quickly swipe away some excess and wipe off on a paper towel. Take the needle tip you cut and carefully stick it on the end of the wing and hold it there for 10 seconds. Then pick up the model and view all sides of the antenna to make sure it is straight. You may still adjust it by lightly pushing the antenna till it is aligned. When done, add some more super glue to seep in the join and dap away any excess. Wait a minute to dry and then u can paint it if needed to match the wing or other antenna. I had to mix some gloss white and gray to color match the wing as best I could. Paint it in a couple coats waiting 5 or 10 mins in between and let dry over night. All done! If you need to do this on a Gemini Jets model, you will probably need to use some other thin metal object to match the size appropriately.



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Last edited by Schalldampfer; 07-16-2020 at 08:01 PM.
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Old 07-16-2020, 11:12 PM   #2 (permalink)
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Default Re: DIY: How to repair 747 Wingtip Antennas

Very nice, I was looking into using parts of paperclips for this task.
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Old 07-16-2020, 11:30 PM   #3 (permalink)
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What a fantastic tutorial, an ingenious idea and the repair looks flawless! This is an absolutely brilliant fix. Thanks a lot for sharing this, will definitely add this method to the inventory for possible future repair jobs!
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Old 07-17-2020, 01:22 AM   #4 (permalink)
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Default Re: DIY: How to repair 747 Wingtip Antennas

These repairs look better than the original antennas.
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Old 07-17-2020, 02:12 AM   #5 (permalink)
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Default Re: DIY: How to repair 747 Wingtip Antennas

Quote:
Originally Posted by shandaken View Post
These repairs look better than the original antennas.
Agree 100%!! This is very much appreciated by those of us who have no presence on FB!

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