YVV-1 means Program Safety Office, Directorate of Launch Base Operations in
NASA
Similar to YVV-1
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