Friday, June 14, 2019

Fuselage, MID Lower Structure (Part 23)

During the last session, I treated the Step Attach Rib Doublers and Step Attach Ribs with Alumiprep and Alodine.  After allowing them to dry overnight, I sprayed them with Akzo primer this afternoon.  Here are the six pieces after letting the primer dry.

I riveted the four Doublers to the Ribs as shown below.  The four Doublers took 20 AN470AD3-3 rivets (10 on each Rib).  The manufactured heads are shown on the left and the shop heads on the right.  Each one of the Ribs also had two K1000-08D nutplates installed with two AN426AD3-3.5 rivets.

During this session, I also prepared the last few parts and pieces for this section.  These pieces came in one connected piece from Van’s known as the F-01458AB Side Brackets.  They were separated into F-01458A-L & -R (small ones) and F-01458B-L & -R (large ones).  All the edges were cleaned, holes deburred and dimpled.

These are the F-01458-L & -R Side Frames.  They have had their edges cleaned, holes deburred and dimpled.

The last piece in this section to be prepared was the F-01430 Baggage Floor Stiffener.  The edges were cleaned, holes deburred and dimpled.

The seven pieces prepared today are ready to be treated with Alumiprep, Alodine and Akzo Primer.  I will do this during the next work session.