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Production Verification Audit
in NASA
Preburner Valve Actuator
in NASA
Propellant Valve Actuator
in NASA
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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
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