| Acronym | Meaning |
| MON | Monitor |
| PY | Program Year |
| OPF | Orbiter Processing Facility |
| P/L | Postlanding |
| RAC | ReliabilitY Action Center |
| FCS | Flight Control System (Subsystem) |
| PPS | Provisioning Performance Schedule |
| DS | Data Storage |
| NSI-I | NASA Standard Initiator-Type I (was SMSI) |
| M | ESAModular Equipment Stowage Assembly |