| 1 | MCM | Heli Air Monaco | IATA: YO, Callsign: Heli Air, IATA Prefix: 747, | MC | AVCODES |
| 2 | MCM | Heli Air Monaco | IATA: EM, Callsign: Echo Mike, | MC | AVCODES |
| 3 | MCM | Heli-Air-Monaco | | | ICAO1 |
| 4 | MCMD | MCMULLEN CUSTOM TRANSPORT LTD | | | SCAC4 |
| 5 | MCMH | MCMAH | | | SCAC4 |
| 6 | MCMK | MCM ACRES LTD | | | SCAC4 |
| 7 | MCML | MCCOMB RELOCATION SERVICES | | | SCAC4 |
| 8 | MCMM | MCCORMI | | | SCAC4 |
| 9 | MCMN | MULTICITY MOVING INC | | | SCAC4 |
| 10 | MCMP | MARINA CARTAGE CO | | | SCAC1 |
| 11 | MCMP | MARINA CARTAGE CO | | | SCAC4 |
| 12 | MCMQ | McCAULEY MOVING & STORAGE OF FAYETTEVILLE, INC | | | SCAC1 |
| 13 | MCMQ | MCMAH | | | SCAC4 |
| 14 | MCMR | M C M MARINE INC | | | SCAC4 |
| 15 | MCMS | MCMA | | | SCAC4 |
| 16 | MCMT | MCMAHONTRA | | | SCAC4 |
| 17 | MCMU | MANAGEMENT CONTROL & MAINTENANCE S.A. | | CH | BIC |
| 18 | MCMU | MANAGEMENT CONTROL & MAINTENANCE S.A. | | | PWRC |
| 19 | MCMU | Management Control and Maintenance | | | RSRV |
| 20 | MCMU | MANAGEM | | | SCAC4 |
| 21 | MCMX | M C Rail Services Ltd. | 7/2005 (not listed) | | NAKINA |
| 22 | MCMX | M C RAIL SERVICES, LTD. | | | PWRC |
| 23 | MCMX | M C Rail Services | | | RSRV |
| 24 | MCMX | M C RAIL SERVICES LTD | | | SCAC4 |
| 25 | MCMZ | MCLAUGHLIN METALS | | | PWRC |
