| Acronym | Meaning |
 | ST | Self Test |
| LL | Long Line |
| S | Sta R |
| VHF/AM | Very High Frequency Amplitude Modulator |
| MDM | Medical Monitor |
| PAM | Pulse Amplitude Modulation |
| PRSDS | Power Reactant Storage And Distribution System |
| CCA | Communications Carrier Assembly |
| GRTLS | Glide Return To Landing Site |
| EXEC | Execute |
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