Inertial navigation fault information in C IRS fault, I don't know which aspect you want to write. If this happens, you don't need to deal with it. Delete this information. If the left inertial navigation fails, it is necessary to keep the left IRS. The failure of the right inertial navigation system is the inertial navigation system of the standby right seat.

If writing a paper requires a long speech, I suggest starting with the principle of inertial navigation. From shallow to deep, and then contact the disposal method.