Access hole in cockpit module tunnel

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Access hole in cockpit module tunnel

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Tunnel access hole

Tunnel access hole: 2009-02-09

Nikon Coolpix 8400

The initial shape of the hole cut in the starboard side of the cockpit module tunnel to provide access to the fuel valve mount within the tunnel. It's obvious after the event that it should have been cut less generously at the bottom so that the fuel valve mounting plate was not left dangling in mid-air. I guess I was thinking so much about avoiding the BID flange layup that supports the tunnel bulkhead (which is why it's D-shaped, not circular) that I forgot about other considerations. The picture in the manual shows a circular hole, but it must have been taken on a tri-gear, which does not have the tunnel bulkhead.

Finished tunnel access hole

Finished tunnel access hole: 2009-02-13

Nikon Coolpix 8400

The tunnel access hole with the over-enthusiastic cutting repaired and the anchor nuts fitted. You can see on the far side that the 5-minute epoxy securing the fuel valve mounting plate has formed a nice fillet that will avoid the need for a flox corner under the BID flanges that will be applied next to provide proper support for the mounting plate.

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