| Acronym | Meaning |
 | PAV | Pressure Actuated Valve |
| CCD | Checkout Command Decoder |
| LH2 | Liquid Hydrogen |
| M&O | Maintenance And Operations |
| LED | Light-emitting Diode |
| LCS | LauList Of Command Signals |
| CBA | C-Band Transponder Antenna |
| POGO | Pilot Operational EquiPment |
| SSCSP | Space Shuttle Crew Safety Panel |
| I | DAC Integrated Digital-Analog Converter |
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