1. Cut two "L" angles to fit closeout area per dwg 6B16. 2. Marked centerline on stbd closeout. 3. Located end rivet positions, punched and drilled with #40 bit. 4. Used rivet fan to locate two intermediate rivet locations. 5. Marked and drilled with #40 bit. 6. Positioned in stbd fwd corner, with hole facing fwd. 7. Backdrilled angle from side with #40 bit and clecoed. 8. Back drilled holes through angle into back of 6B16-6 with #40 bit and clecoed. 9. Opened holes with #30 bit for A4 rivets. 10. Repeated steps 2-9 for port closeout.
