RV12 Vertical Stabilizer (continued)

Reference: page 06-04; 1 hour

Step 1: Final-Drill #12 the 3/16 holes in the web of the VS-1202 Front Spar.



Step 2: Machine countersink (section 5E) the six #40 holes in the web of the VS-1203 Rear Spar flush for 3/32 rivets.



Step 3: Machine countersink the four #40 holes in the VS-1212B-R & L Upper Spar Caps flush for 3/32 rivets.



Step 4: Machine countersink the #40 holes in the web of the VS-1202 Front Spar flush for 3/32 rivets. NOTE: I removed the countersink cage to clear the flange on the two holes that are nearest the flange.



Held off on steps 5 & 6 until parts are primed.