New Section!!! FIREWALL!!!
This section starts off with separating the F-01401E Firewall Angles. Once they were separated, the #40 holes (there were only two for the nutplate) and #30 holes were countersunk in the forward flange (you can see the countersunk holes in the picture below). The F-14104 Support Angle is also shown in the picture below. All three pieces had their edges cleaned, holes deburred and treated with Alumiprep and Alodine.....
....then they were primed.
![](https://lh5.googleusercontent.com/WLVYtdKn8nqESazIlX7sh76FyWDgf7ekx8THg1mngUUSdGfmMxf_M7yWSRo)
Once the primer dried, the Support Angle was riveted to the left Firewall Angle using three AN470AD4-5 rivets. This shows the shop head side.....
![](https://lh4.googleusercontent.com/ZLpUT3dxgcfmmrqhjLsMnGx_6j3GpdZ5SLn4GhMWJhu0weRJqbsqhx9mNro)
.....and the manufactured head side.
![](https://lh3.googleusercontent.com/6jJa5Wzg7eEBg1Y5up9XOKAmF3mqG797osdNPFnobLHKUXS3bM23Bgl-two)