| NEVADA | 4SD | RENO-STEAD |
| NORTH DAKOTA | 4S5 | ST THOMAS MUNI |
| OREGON | 4S1 | GOLD BEACH MUNI |
| OREGON | 4S4 | CORNELIUS SKYPORT |
| OREGON | 4S3 | JOSEPH STATE |
| OREGON | 4S7 | MALIN |
| OREGON | 4S9 | PORTLAND-MULINO |
| OREGON | 4S2 | HOOD RIVER KEN JERNSTEDT AIRFIELD |
| WASHINGTON | 4S6 | RIMROCK TIETON STATE |