Nancy was a huge help today as we Back Riveted the Aft Fuse skin to J-Stiffeners, 2 Bulkheads, and the Bellcrank Rib Assembly. Yeah ! Sect 10-13, Step 6 now done. The Bellcrank Rib Assly required switching to Flush Rivet set from outside, w/ Nancy holding titanium bucking bar inside (all done while Aft Fuselage is upside down...so bulkheads "hang" down). For those rivets, my Back Rivet tool couldn't be aligned straight - needed an extra long version apparently.
But much of the Aft Fuse was Back Riveted with Nancy holding the new round bucking bar while I took my turn riveting from underneath "upside down". Whew...glad this is done.
