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Operational Ready Data
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Operational Readiness Date
in NASA
Operational Requirements Document
in NASA
Orbital Requirements Document
in NASA
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Similar to ORD
AAFM - Acoustic Atomic Force Microscopy
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
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