| A110*G | This airport has been surveyed by the national geodetic survey. |
| A110-10 | Snow removal operations in progress winter months. |
| A110-2 | 180 deg turns runway 10L/28R by aircraft over 25000 lbs prohibited. |
| A110-8 | Migratory waterfowl in vicinity of airport. |
| A110-9 | Runways 07/25 and 10R/28L closed to aircraft over 12,500 lbs. |
| A26 | Prior permission required unsked air carrier operations with more than 30 passenger seats contact airport operations 406-657-8496. Airport rescue and fire fighting index B from 0100-0600. |
| A58-28R | +12' ground 0-200' from runway end 400' L. |
| A81 | For MIRL runways 10R/28L and 07/25; HIRL runway 10L/28R; MALSR runway 10L and REIL runways 25 and 28R - contact air traffic control tower. |
