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Technical Standards Order
in NASA
Time Sharing Option
in NASA
Time Since Overhaul
in NASA
132600132602132601
Similar to TSO
A - Aft
A&A - Advertise and Award
A&E - Architectural and Engineering
A&E - Architects and Engineering
A&I - Assembly and Installation
A&L - Approach and Landing
A&P - Attitude and Pointing
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