Flush Access Hatch

This hatch gives you easy access to wing-mounted servos or hidden wing bolts. It’s retained by projecting tabs and a couple of flat-head screws, and it should be made of a material that’s the same thickness as the surrounding sheeting. If you have to remove the hatch regularly for maintenance, use machine screws and T-nuts. Small nylon screws are even more resistant to vibration, and you can find then at most hardware stores. Adapted from...