We've just recently received our fuselage kit after some delays, and were eager to get back to work. It's our first build, and we're getting more comfortable trusting our gut when things don't seem quite right, but it's been eight months since we were last building.
We finished the mid-fuse bulkheads, but as we're working on the ribs and preparing to rivet the finished assemblies to the bulkhead, we noticed something that seems off. Below are two diagrams from Chapter 26-3 and 26-4, particularly showing the left outboard seat rib subassembly. The revision date for these diagrams is 24 February 2022, so it's quite new.
https://photos.app.goo.gl/727HsvsZidQ775yd9
These two diagrams are showing opposite things, right? On 26-3, it's showing the intercostal on the outside and (though I don't show it in this photo), the other part of that diagram shows the seatbelt anchor on the inboard side of the rib. That's how we assembled this rib (and the corresponding one on the right.)
On 26-4 though, the new diagram (omitting the intercostal, presumably for better visualization) shows the anchor now on the outboard side? That just seems wrong. Though it looks like there's been a significant amount of reorganization since the prior printing, the diagram on 26-4 in that printing seems more logical, with the seatbelt anchors both in the "inside" of the two ribs for each respective side.
We are tempted to trust our guts on this one and assume this diagram error slipped by the spot-checkers when revising, but then again it seems like a lot of work to completely redo that diagram when it seems so similar. But there are also many steps in the original that look like they've been moved to a different chapter, so potentially an innocent mistake. There don't appear to be any SBs in play here that would suggest this was intentional. Can someone just confirm our sanity here? Thanks!
We finished the mid-fuse bulkheads, but as we're working on the ribs and preparing to rivet the finished assemblies to the bulkhead, we noticed something that seems off. Below are two diagrams from Chapter 26-3 and 26-4, particularly showing the left outboard seat rib subassembly. The revision date for these diagrams is 24 February 2022, so it's quite new.
https://photos.app.goo.gl/727HsvsZidQ775yd9
These two diagrams are showing opposite things, right? On 26-3, it's showing the intercostal on the outside and (though I don't show it in this photo), the other part of that diagram shows the seatbelt anchor on the inboard side of the rib. That's how we assembled this rib (and the corresponding one on the right.)
On 26-4 though, the new diagram (omitting the intercostal, presumably for better visualization) shows the anchor now on the outboard side? That just seems wrong. Though it looks like there's been a significant amount of reorganization since the prior printing, the diagram on 26-4 in that printing seems more logical, with the seatbelt anchors both in the "inside" of the two ribs for each respective side.
We are tempted to trust our guts on this one and assume this diagram error slipped by the spot-checkers when revising, but then again it seems like a lot of work to completely redo that diagram when it seems so similar. But there are also many steps in the original that look like they've been moved to a different chapter, so potentially an innocent mistake. There don't appear to be any SBs in play here that would suggest this was intentional. Can someone just confirm our sanity here? Thanks!