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Acceptance Test Procedure
in NASA
Accelerated Training Program
in NASA
Authorization To Proceed
in NASA
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Similar to ATP
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