### Question
What is the definition of major system platform?


### Answer
The definition of **major system platform** is as follows in *10 U.S.C. § 4401*:

> the highest level structure of a major weapon system that is not physically mounted or installed onto a higher level structure and on which a major system component can be physically mounted or installed

#### Citation:
  - *10 U.S.C. § 4401*
  - Heading: **Subtitle A-General Military Law > PART V-ACQUISITION > Subpart F-Major Systems, Major Defense Acquisition Programs, and Weapon Systems Development > CHAPTER 327-WEAPON SYSTEMS DEVELOPMENT AND RELATED MATTERS > SUBCHAPTER I-MODULAR OPEN SYSTEM APPROACH IN DEVELOPMENT OF WEAPON SYSTEMS**

