| Date: |
8-6-2013 |
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| Number of Hours: |
2.00 |
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| Brief Description: |
Drill out and countersink nut plate holes |
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Spent ~ hour verifying instructions, sizes of drill bits (tried #41 drill to keep hole smaller - didn't work because countersink bit is #40) Determined that nut plate rivet holes are undersized and need to be drilled out / reamed to #40. nut plates are attached using AN 426 AD 3-4 rivets. Going to use reamer and countersink with #40 bit. Drilled out / countersunk first 31 nut plates, 62 holes. Looks good, clean, smooth. #8 screw holes need to be drilled out to #19 |
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