Airport codes Abbreviations and Acronyms
- 3RCRoscommon Conservation Airport, Roscommon, Michigan USA
- 3RURust Strip Airport, Woolsey, Georgia USA
- 3S2Swans Field Airport, Dixfield, Maine USA
- 3S4Illinois Valley Airport, Cave Junction, Oregon USA
- 3S5Schiffer Acres Airport, St. Johns, Michigan USA
- 3S6Toketee State Airport, Clearwater, Oregon USA
- 3S7Nehalem Bay State Airport, Manzanita, Oregon USA
- 3S8Grants Pass Airport, Grants Pass, Oregon USA
- 3S9Condon State Pauling Field Airport, Condon, Oregon USA
- 3SC3Carolina Pines Regional Medical Center Heliport, Hartsville, South Carolina USA
- 3SGSaginaw County Harry W. Browne Airport, Saginaw, Michigan USA
- 3SQSt. Charles Airport, Blanchette, Missouri USA
- 3SYSpeedway Airport, Indianapolis, Indiana USA
- 3T0Cedar Mills Airport, Gordonville, Texas USA
- 3T1Wood Country Airport, Mineola/Quitman, Texas USA
- 3T2Wolfe Air Park Airport, Manvel, Texas USA
- 3T3Boyceville Municipal Airport, Boyceville, Wisconsin USA
- 3T5Fayette Regional Air Center Airport, La Grange, Texas USA
- 3T7Middle Bass Island Airport, Middle Bass Island, Ohio USA
- 3T8CBD Heliport, Houston, Texas USA
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