OTDA means Office of Tracking and Data Acquisition
now OSTDS in
NASA
Similar to OTDA
A&L - Approach and Landing
A&P - Attitude and Pointing
A&PS - Administration and Program Support
MSFC Directorate
A&R - Automation and Robotics
A&RC - Application and Resource Control
A&TA - Assembly and Test Area
A&V - Assembly and Verification
View all in NASA