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NFPA 1127 applies to the design, construction, limitation of propellant mass and power, and reliability of high power rocket motors and motor components. This code also addresses the design and construction of vehicles propelled by high power rocket motors and the launch of high power rocket vehicles.

The 2002 edition of the Code contains changes intended to coordinate the three rocketry documents--NFPA 1122: Code for Model Rocketry, NFPA 1125: Code for the Manufacture of Model Rocket and High Power Rocket Motors, and NFPA 1127. This has been accomplished by deleting redundant requirements that were contained in this document as well as NFPA 1125. This includes moving all high-power rocket motor testing and certification requirements from NFPA 1127 to NFPA 1125.