| Code | Description |
|---|
| 19687 | Horizon Air: QX |
| 20046 | Air Wisconsin Airlines Corp: ZW |
| 20170 | Mesaba Airlines: XJ |
| 20202 | Chicago Express Airlines: C8 (1) |
| 20225 | Peninsula Airways Inc.: KS |
| 20226 | Spernak Airways Inc.: SNK |
| 20237 | Trans States Airlines: AX |
| 20253 | Cape Air: 9K |
| 20254 | Colgan Air: 9L |
| 20257 | Bemidji Airlines: CH |
| 20258 | Big Sky Airlines Inc.: GQ |
| 20261 | Ellis Air Taxi Inc.: ELL |
| 20263 | Empire Airlines Inc.: EM |
| 20265 | Freedom Airlines d/b/a HP Expr: F8 |
| 20267 | Grand Canyon Helicopters: GCH |
| 20272 | Kenmore Air Harbor: KAH |
| 20280 | Seaborne Virgin Islands, Inc.: SEB |
| 20281 | Mountain Bird/Salmon Air: S6 (1) |
| 20285 | Ward Air: WRD |
| 20286 | Vintage Props & Jets Inc.: VQ |
| 20287 | Island Air Hawaii: WP |
| 20291 | Air Midwest Inc.: ZV |
| 20300 | Pacific Wings Airlines: LW |
| 20304 | SkyWest Airlines Inc.: OO |
| 20310 | Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines: WL |
| 20319 | Smokey Bay Air Inc.: 2E |
| 20320 | Frontier Flying Service: 2F |
| 20322 | Bidzy Ta Hot Aana, Inc. d/b/a Tanana Air Service: Z3 |
| 20323 | Warbelow: 4W |
| 20324 | Yute Air Aka Flight Alaska: 4Y (1) |
| 20325 | Arctic Circle Air Service: 5F |
| 20326 | Cape Smythe Air Service: 6C |
| 20327 | NEW PACIFIC AIRLINES: 7H |
| 20328 | Inland Aviation Services: 7N |
| 20330 | Ryan Air f/k/a Arctic Transportation: 7S |
| 20331 | Bering Air Inc.: 8E |
| 20332 | Baker Aviation Inc.: 8Q |
| 20333 | Wright Air Service: 8V |
| 20335 | Boston-Maine Airways: E9 (1) |
| 20336 | Hageland Aviation Service: H6 |
| 20337 | Kalinin Aviation LLC d/b/a Alaska Seaplanes: J5 |
| 20339 | L.A.B. Flying Service Inc.: JF |
| 20340 | Seaport Airlines, Inc.: K5 |
| 20341 | Alaska Central Express: KO |
| 20342 | 40-Mile Air: Q5 |
| 20346 | Iliamna Air Taxi: V8 |
| 20353 | Dynamic Aviation, Inc. d/b/a Beacon: 8D |
| 20356 | Skyway Airlines: AL |
| 20358 | Great Lakes Airlines: ZK |
| 20361 | Valley Air Express Inc.: 2U |
| 20363 | Endeavor Air Inc.: 9E |
| 20366 | ExpressJet Airlines LLC d/b/a aha!: EV |
| 20374 | ExpressJet Airlines Inc.: XE |
| 20378 | Mesa Airlines Inc.: YV |
| 20383 | Venture Travel LLC d/b/a Taquan Air Service: K3 |
| 20389 | Florida Coastal Airlines: PA |
| 20397 | PSA Airlines Inc.: OH |
| 20398 | Envoy Air: MQ |
| 20401 | Silver Airways: 3M |
| 20404 | Independence Air: DH |
| 20407 | Regions Air, Inc.: 3C |
| 20408 | Tatonduk Outfitters Limited d/b/a Everts Air Alaska and Everts Air Cargo: 5V |
| 20411 | Arizona Express: K7 |
| 20413 | Skagway Air Service: N5 |
| 20414 | Executive Airlines: OW |
| 20417 | Comair Inc.: OH (1) |
| 20418 | Chautauqua Airlines Inc.: RP |
| 20424 | Grand Canyon Airlines, Inc. d/b/a Grand Canyon Airlines d/b/a Scenic Airlines: YR |
| 20426 | Vieques Air Link Inc.: VI |
| 20427 | Piedmont Airlines: PT |
| 20439 | Homer Air: HB |
| 20443 | Island Air Service: 2O |
| 20445 | CommuteAir LLC dba CommuteAir: C5 |
| 20448 | Shuttle America Corp.: S5 |
| 20455 | Grant Aviation: GV |
| 20500 | GoJet Airlines LLC d/b/a United Express: G7 |
| 21022 | PM Air, LLC: Z3Q |
