Sunday, March 6, 2016

Empennage

Mar 5, 2016

Horiz Stab  (4.0hrs)

Sect 8-2:  Steps 7-8.    Clean  doubler with acetone, then primed.    After drying, riveted to Rear Spar with AD470 4-6 rivets (36 of them !)   The Main Squeeze makes quick work of these rivets, but my arm was getting a little tired.    Pic below still has blue marks indicating where NOT to rivet at this time.


Sect 8-3:  Steps 1 & 2:  Drill, deburr, and rivet (6) the inboard hinge assembly with flange bearing captured between.    Jumped ahead to this page while waiting for primer to dry on doubler.
Sect 8-2:  Step 9:  Riveted 4 pairs of hinge brackets to spar.   (out of sequence, since I did these while waiting for primer to dry fully).

 Sect 8-3: Step 3.  Bolted inboard hinge to spar and doubler.   Used 28 in-lbs plus 14 in-lbs (friction drag for lock nut) per Sect 5-20 in manual.
Step 8-3:  Step 4:  Prep 2 Front Spar Caps and 2 Stingers for the Forward Spar.    Involves cutting off ends at angle, grinding to smooth finish, and deburring all edges.   Got into a rhythm so I felt a bit like a robot doing these edges.   Not pictured...