Mistake on plans: fuel tank attach reinforcement bracket

I caught this one last week. It probably hasn't caused any problems for folks or we would have heard of it by now but in the event you're stumped by it, there's a mistake on the 7/7A drawing where it shows what rivets go where (I think it's DWG 28 ).

At issue is the callout where the center bulkhead in the forward fuselage meets the lower longeron. The rivet callout is for a , well, rivet.

But the DWG 38, Detail F (I think) shows that that hole is actually matched drilled with the 702 side skins to be a bolt or screw that attaches the fuel tank reinforcement bracket.

It's probably a remnant of the difference between the -9 and -7. The fuel attach bracket on the -9 is slightly different in that area.

Soon you won't even flinch when dimensions are missing or when you have to look at the slider drawings to find details for the tip-up canopy.

Dave