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Program Change Notice
in NASA
Page Change Notice
in NASA
Program Control Number
in NASA
128649128650128648
Similar to PCN
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