Brief Description: Separate center spar for modification
1. Drilled A5 rivet centers on top of center spar with #40 bit. 2. Drilled A5 rivets on top of center spar and removed. 3. Center punched conventional rivets on top front of center spar. 4. Pilot drilled conventional rivet centers with #40 bit. 5. Removed heads with #20 bit. 6. Drilled out rivet bodies with #20 bit. 7. Removed bolts holding center spar halves together. 8. Separated halves. 9. Stored hardware in zip lock bag.
A5 rivets removed from top of center spar
Conventionalo rivets removed from top front of center spar
