| Acronym | Meaning |
| HM/HS | Hardness Maintenance/hardness Surveillance |
| NP | Power Turbine Speed |
| HP | Hewlett Packard |
| FMCM | Full Mission Capable |
| OSR | On Site Representative |
| QCPI | Quality Conformance Preliminary Inspection (in-plant) |
| RAMEC | Rapid Action Minor Engineering Change |
| WIP | Work In Progress (process) |
| RAT | Reliability Assessment Testtmtram Air Turbine |
| S/W | Software |