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Technical Standards Order
in NASA
Time Sharing Option
in NASA
Time Since Overhaul
in NASA
132600132602132601
Similar to TSO
A&R - Automation and Robotics
A&RC - Application and Resource Control
A&TA - Assembly and Test Area
A&V - Assembly and Verification
A/A - Air to Air
A/C - Aircraft
A/C - Associate Contractor
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