FIREWAll BOTTOM STIFFENER, FIREWAll TOP STIFFENER, AND FIREWAll SIDE STIFFENER

The parts for Firewall was collected and deburr.

The Firewall Bottom Stiffener was clamp to the bottom of the 22mm flange of the Firewall.

With a #40 drill bits, the Firewall was back drilled and cleco into the Firewall Bottom Stiffener.

The Firewall Top Stiffener was cleco to the Firewall. A piece of L angle 520mm long was cut and positioned on top of theTop Firewall Stiffener. The L angle was positioned 10mm edge distance for the holes at each end of the L angle on the Firewall Top Stiffener. With a #40 drill bit, the Firewall Top Stiffener was drilled through into the L angle and cleco.

A line from the start of the radius to 10mm down from the top of the large flange on the Firewall Side Stiffener was marked. The large flange of the Firewall Side Stiffener was trimmed along the line. A center line on the back of the large flange was drawn.

The Firewall Side Stiffener was positioned on the front of the Firewall. Clamp the Firewall Side Stiffener to the Firewall when the center line was visible through the predrilled hole for the Engine Mount Bolt. With a #40 drill bit, the Firewall was drilled and cleco through into the Firewall Side Stiffener.