Introduction
The document discusses the use of advanced laser tracking technology by Lockheed Martin Aeronautics to ensure the quality and precision of the C-130 Hercules aircraft, a versatile military aircraft first built in 1954. The focus is on the implementation of API laser trackers in their manufacturing processes.

Specifications and Technology
Lockheed Martin employs three API laser interferometer trackers, including two Tracker 3 models and the Radian, at their Marietta, Georgia plant. These devices are managed by quality control analyst Paul Davis. The Radian tracker is noted for its portability, weighing less than 20 lbs and having dimensions similar to a shoebox.

Procedures and Efficiency
Laser trackers have replaced older, more labor-intensive methods involving theodolites and optical tools. The introduction of laser interferometer technology has significantly reduced the time and errors associated with aircraft component measurements. The Intelliscan 360 accessory allows inspectors to check the position of 1,200 holes in one hour, demonstrating the efficiency of the system.

Quality Assurance
API trackers are used not only for measuring aircraft components but also for validating the tools and machinery used in aircraft construction. This ensures that all tools are precise and reliable before being used in production.

Volumetric Error Compensation (VEC)
Lockheed Martin was the first to use API's VEC solution to validate five-axis milling machines, ensuring accurate movements across all six degrees of freedom. This represents a significant advancement over traditional calibration methods.

Advantages and Innovations
The laser trackers offer the ability to level to gravity, saving time and increasing accuracy. The Radian's wide measurement range and high accuracy, designated as "first tier" by the National Institute of Standards and Technology, highlight its effectiveness.

Conclusion
The use of API laser trackers at Lockheed Martin is expected to continue improving manufacturing processes and fostering innovation. As technology evolves, the ability to manufacture with tighter tolerances will require ongoing adaptation from the workforce.