| Acronym | Meaning |
 | IECMS | In Flight Engine Condition Monitoring System |
 | ISC | Intercommunication Set Control |
 | EMT | Elapsed Maintenance Time |
 | HVR | Hover |
 | CCA | Circuit Card Assembly |
 | PERF | Performance |
 | AAAA | Army Aviation Association Of America |
 | TPI | Threads Per Inch |
 | BFTT | Battle Force Tactical Training |
 | SOMM | System Organizational Maintenance Manuals |