CDNB means CDR
Cleaning and Decontamination Request Discrepancy Notice Board in
NASA
Similar to CDNB
AA - Adverse Action
AA - Antenna Assembly
AAA - Avionics Air Assembly
AAC - Aft Access Closure
AACB - Aeronautics and Astronautics Coordinating Board
AAD - Attitude Anomaly Detector
AAFE - AeroAssist Flight Experiment
View all in NASA