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Time Display Unit
in NASA
Thermal Display Unit
in NASA
Tracking Data Unit
in NASA
132272132271132270
Similar to TDU
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
AAFM - Acoustic Atomic Force Microscopy
View all in NASA