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Program Performance Baseline
in NASA
Parts per Billion p/b preferred
in NASA
129162129163
Similar to PPB
AC - Comptroller Office
AC - Alternating Current
AC - Assembly Complete
ACBM - Active Common Berthing Mechanism
ACC - Aft Cargo Carrier
ACCA - Automatic Cloud Cover Assessment
ACCMS - Advanced Checkout, Control, and Maintenance System
View all in NASA