Chosen Solution
I have a Mid 2012 Macbook Air 13" (A1466 | 5,2 Model). The hinges on this machine is loose so if I am doing anything in the car while someone else is driving, the screen falls all the way to the back position over every bump. Is there a way to just replace the hinges on this model or would I have to replace the whole screen? Thanks in advance of your help!
Have you tried just tightening the screws? The ones starting at step #32 of this guide: MacBook Air 13" Mid 2012 Display Assembly Replacement
After doing a lot of digging around and Youtubing it seems the hinge replacement requires the removal of the screen bezel and nearly complete disassembly of the screen panel… not an easy job, but possible. Looking at videos showing how to replace the LCD from the screen panel it’s apparent that both hinges have cables which go behind the bezel to connect.
Search for LCD panel replacement Macbook Air and you’ll be able to find a few such videos.