The is a widely utilized Inertial Navigation System (INS) developed by Northrop Grumman (formerly Litton) . It is primarily designed for commercial and military aircraft to provide precise navigation data, including position, velocity, and attitude, without the need for external radio references. Overview of the LTN-92 INS

The is a legacy Inertial Navigation System (INS) developed by Litton Aero Products (now part of Northrop Grumman). It is a ring laser gyro (RLG) system commonly used as a retrofit to replace older, less reliable spinning-mass INS units in commercial and military aircraft. LTN-92 System Overview

If equipped, the LTN-92 Advanced Laser INS can use GPS to zero out drift automatically.