There are a handful of small tasks that need to be taken care of before the canopy rails can be riveted to the longerons. First up are the panel attach brackets.
The forward and aft canopy rails are then riveted together with a couple of AN3 rivets.
Once the canopy rails are riveted to the longerons, it’s really tough to get a wrench behind them to tighten down the canopy strut attach brackets.
By positioning the nutplates this way, most of the rivets will be hidden behind the bracket.
The beefy angles that sit under the roll bar need to be notched to clear the rivets that attach the forward end of the skin that wraps around the rear window.
The also riveted the fresh air vent brackets to the angles that will attach them to the side skins.
