28 October 2009
Installing nutplates on spar
3.0 hours
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| Installing nutplates (Full size) First thing to do is drill out the nutplate rivet holes and countersink them. Then alodine, and install the nutplates. Here I am installing the nutplates after those steps. |
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| Countersinking bolt holes (Full size) After putting in the nutplates, the bolt holes need to be countersunk for the skin dimples. I used the cage countersink tool with a #30 pilot for the tank nutplates, and a #40 pilot for the access panel nutplates. After that, alodine the countersinks. |
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