AK27I means 73% nitric acid + 27% N2O4 + Iodine passivant
AK = Azotna Kislota = Nitric Acid in
NASA
Similar to AK27I
A/FM - Air/Firing Mechanism
A/G - Air to Ground
A/L - AutoLand
A/L - AirLock
A/L - Approach and Landing
AA - Astronomical Applications
AA - Adverse Action
View all in NASA