1. Located previously marked gear uprights 2. Positioned fwd port gear upright and clamped at top. 3. Back drilled pilot hole at top position with #40 bit. 4. Clecoed in place. 5. Swung upright until rivet line was visible through bottom hole, and back drilled with #40 bit. 6. Clecoed. 7. Back drilled intermediate holes with #40 bit. 8. Repeated steps 2-7 for aft port gear upright.
