Does anyone know what hardware should be installed in these two holes?
There are two each side in the forward side of the Center Section. They don't attach to anything as far as I can tell.
The Aft side has two bolts that go in from Aft-Forward into nutplates in the wing spar web.
View attachment 47042
Does anyone know what hardware should be installed in these two holes?
There are two each side in the forward side of the Center Section. They don't attach to anything as far as I can tell.
The Aft side has two bolts that go in from Aft-Forward into nutplates in the wing spar web.
View attachment 47042
Check the Service bulletin that talks about missing bolts.
Check the Service bulletin that talks about missing bolts.
I kinda helped instigate that SB a long time ago. Found & reported 3 RVs with them missing...
Drawing 11 - AN4-13A bolts, there should be 2 nutplates on front side of spar located between the big attach bolts.
On my rv9a, those get bolts through the shear web, probably to keep shear web from flexing.
But let me warn you, when you install the nutplates, put a bolt in them. Mine tended to wonder away from center when riveted on. I had to really work at getting those bolts in when I put the wings on.
There was an SB regarding the bolts and blocks used in this area. I believe they are required and have been overlooked by some builders.
Roberta
I guess you are talking about these... It's also one of the "must do" items on my final inspection list.
On my RV7 plans they are mentioned on DWG11 bottom left.
I also read that many forget them. Not a real good idea on something holding the wingspar.
I guess you are talking about these... It's also one of the "must do" items on my final inspection list.
On my RV7 plans they are mentioned on DWG11 bottom left.
I also read that many forget them. Not a real good idea on something holding the wingspar.
Jurgen
Those are not the holes. Look at the opposite side of the Center Section. Two matching holes with nothing in them