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High Efficiency Particle Accumulator
in NASA
High Efficiency Particle Air Filter
in NASA
125026125027
Similar to HEPA
AC - Assembly Complete
ACBM - Active Common Berthing Mechanism
ACC - Aft Cargo Carrier
ACCA - Automatic Cloud Cover Assessment
ACCMS - Advanced Checkout, Control, and Maintenance System
ACCS - Advanced Checkout and Control System
ACE - Advanced Composition Explorer
View all in NASA