Fast approaching the end of the latest "chunk" of work, but I still have one major item to finish: how does the HUD know the landing gear status? The diagrams only shows the downlock indications being sent to the HUD (directly from the gear electronics), but then there are texts saying that a message is shown if the gear is up at 300ft, and another is shown when it is deploying. So, the uplock indications have to get to the HUD. Any ideas how?
Although the diagram doesn't show the uplocks anywhere, it indicates there are 10 such "direct" signals being input to the HUD, so take 3 for the downlocks, 1 for antiskid fail and 1 for NWS fail, and 5 signal inputs remain unused. It makes no sense to have some gear signals going via GPC, while others go directly, so I'm inclined to add the uplocks the same way as the downlocks. shrug: