Why is torque value critical during assembly?

Torque value is critical during assembly because it ensures proper clamping of components and helps maintain the structural integrity of the aircraft under various loads. When parts are tightened to the specified torque, they achieve the correct amount of pressure against each other, which is necessary for distributing loads evenly across the assembly. This clamping force prevents movement, slippage, or separation of components that could lead to structural failure during operation.

If the torque is too low, the assembly may be loose, which can cause parts to shift or vibrate, potentially leading to catastrophic failure. On the other hand, if the torque is too high, it can lead to deformation or damage to the components, which can also compromise safety and performance. Therefore, adhering to the specified torque values is essential for maintaining the strength and reliability of the aircraft structure during its operational life.