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Air Admittance Valve
in NASA
Aerospace Audio- Visual
in NASA
120992120993
Similar to AAV
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
ACCS - Advanced Checkout and Control System
View all in NASA