| 1 | TNH | Turnhouse Flying Club | Callsign: Turnhouse, | GB | AVCODES |
| 2 | TNHB | TOP NOTCH TRUCKING | | | SCAC4 |
| 3 | TNHC | TRANCY | | | SCAC4 |
| 4 | TNHD | TRANSPORT HENRI DION INC | | | SCAC4 |
| 5 | TNHE | TRANSPORT HENDY INC | | | SCAC4 |
| 6 | TNHI | TRANAVI | | | SCAC4 |
| 7 | TNHK | THUNDER ROAD TRANSPORTATION | | | SCAC4 |
| 8 | TNHL | TRANSPORT PROS LLC | | | SCAC4 |
| 9 | TNHM | TNYR | | | SCAC4 |
| 10 | TNHN | T & N TRANSPORTATION | | | SCAC4 |
| 11 | TNHR | Three Notch R.R. Co., Inc. | added 4/2005; 7/2005 | | NAKINA |
| 12 | TNHR | THREE NOTCH RAILROAD CO., INC. | | | PWRC |
| 13 | TNHR | Three Notch Railroad | | | RSRV |
| 14 | TNHR | THREE NOTCH RAILWAY LLC | | | SCAC4 |
| 15 | TNHT | TNT TRANSPORT | | | SCAC4 |
| 16 | TNHY | THIESSEN, H L TRANSPORT | | | SCAC4 |
