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Air Admittance Valve
in NASA
Aerospace Audio- Visual
in NASA
120992120993
Similar to AAV
A/L - Approach and Landing
AA - Astronomical Applications
AA - Adverse Action
AA - Antenna Assembly
AAA - Avionics Air Assembly
AAC - Aft Access Closure
AACB - Aeronautics and Astronautics Coordinating Board
View all in NASA