| Acronym | Meaning |
 | FDM | Frequency Division Multiplexer |
| SSITP | Shuttle System Integrated Test Plan |
| AMF | Astronaut Memorial Foundation |
| EBW | Electron Beam Welding |
| MHF | Medium High Frequency |
| MB | Millibar |
| TPM | Transfer Phase Midcourse |
| NDI | Nondestructive Inspection |
| ETA | Explosive Transfer Assembly |
| ETLOW | External Tank Lift-Off Weight |
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