Worked on fwd lower structure

Dimpled the fwd bottom skins

Rived the antenna doublers and skin stiffeners

Riveted the muffler hangar doubler to the muffler tunnel side walls

Riveted the muffler hangars to the side wall tunnels

Riveted the muffler tunnel to the left and right bottom skins

Riveted the firewall assembly to the the left and right bottom skins

Riveted the side tunnels and the cover base to the to each other and to the bottom skins

All the joints at the firewall are assembled with tank sealant to prevent oil and engine compartment 'sludge' from making it way into the cabin

Design pdevty