Military Standard 1629A

Military Standard 1629A is a guideline used by the U.S. Department of Defense to classify the severity of aerospace and electronic system failures. It establishes a standardized system to assign priority levels—ranging from minor issues to critical failures—based on how they impact safety, mission success, or system operation. This helps ensure that the most serious problems are addressed promptly and efficiently, facilitating effective maintenance, troubleshooting, and communication across military and aerospace projects. In essence, it standardizes how failures are evaluated so resources are focused where they are most needed.