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Distribution Control Agency
in NASA
Digital Command Assembly
in NASA
Distance of Closest Approach
in NASA
Design Change Authorization
in NASA
Defense Communications Agency
in NASA
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Similar to DCA
AAV - Aerospace Audio- Visual
ABA - Astronaut Boarding Aircraft
ABC - Active Body Control
ABC - Audio Bus Coupler
ABCL - As Built Configuration List
ABE - Anomalous Biological Entities
ABHRS - As Built Hardware Reporting System
View all in NASA