Worked on fwd lower structure
Dimpled the fwd bottom skins
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Rived the antenna doublers and skin stiffeners
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Riveted the muffler hangar doubler to the muffler tunnel side walls
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Riveted the muffler hangars to the side wall tunnels
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Riveted the muffler tunnel to the left and right bottom skins
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Riveted the firewall assembly to the the left and right bottom skins
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Riveted the side tunnels and the cover base to the to each other and to the bottom skins
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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
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