| Abbreviation | Definition |
|---|---|
| NZYK | Monterey Park, New Zealand |
| NZYP | Waipukurau, New Zealand |
| O05 | Rogers Field Airport, Chester, Pennsylvania USA |
| O11 | STILWELL CHEROKEE NATION Airport, Stilwell, Oklahoma |
| O20 | Kingdon Airpark, Lodi, California USA |
| O22 | Columbia Municipal Airport, Columbia, California USA |
| O26 | Lone Pine Airport, Lone Pine, California USA |
| O28 | Willits Municipal Airport, Ells Field, Willits, California USA |
| O35 | HOLLIS Municipal Airport, Hollis, Oklahoma |
| O41 | Watts- Woodland Airport, Woodland, California USA |
| O42 | Woodlake Airport, Woodlake, California USA |
| O46 | Weed Airport, Weed, California USA |
| O48 | Little River Airport, Little River, California USA |
| O69 | Petaluma Municipal Airport, Petaluma, California USA |
| O81 | Tulelake Municipal Airport, Tulelake, California USA |
| O88 | Paradise Skypark, Paradise, California USA |
| OAAD | Amdar, Afghanistan |
| OAAK | Andkhoi, Afghanistan |
| OAAS | Asmar, Afghanistan |
| OABD | Behsood, Afghanistan |