Pg. 12-08 Step 2: Completed sanding gap on Tailcone Fairing. Ended up with a 3/64" gap which in the middle of the range allowed. Step 3: Countersunk the #40 holes in the Lower Tailcone Fairing. Step 4: Riveted the Tabs to the Lower Tailcone Fairing using AN426AD-3.5 rivets.