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High Efficiency Particle Accumulator
in NASA
High Efficiency Particle Air Filter
in NASA
125026125027
Similar to HEPA
AAR - After Action Review
AARL - Aeronautical and Astronautical Research Laboratory
AAV - Air Admittance Valve
AAV - Aerospace Audio- Visual
ABA - Astronaut Boarding Aircraft
ABC - Active Body Control
ABC - Audio Bus Coupler
View all in NASA