AK27I means 73% nitric acid + 27% N2O4 + Iodine passivant AK = Azotna Kislota = Nitric Acid in NASA

Similar to AK27I

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
A/A - Air to Air

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