| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|
| Atmospheric research aircraft |
|---|
| Bahamas | 735 (Mi763) | | 1991 | hurricane awareness: "weather reconniassance Lockheed WP-3D Orion" |
| Bahamas | 732-735 fdc1 | One of four stamps on FDC
|
| Bahamas | 732-735 fdc2 | One of four stamps on FDC (and signature)
|
| Bahamas | 732-735 fdc3 | One of four stamps on FDC (and signature, different)
|
| Bahamas | 732-735 fdc4 | One of four stamps on FDC (and signature, different)
|
| Bahamas | 732-735 fdc5 | One of four stamps on FDC (and signature, different)
|
| Bahamas | 1306 (Mi1394) | | 2010 | "hurricane awareness": hurricane depiction and research aircraft |
| Bahamas | 1304-1307 fdc | One of four stamps on FDC
|
| Barbados | 558 (Mi542) | | 1981 | hurricane season: "hurricane hunter McDonnell F2H-2P Banshee" |
| Barbados | 555-558 fdc | One of four stamps on FDC, also insert and insert insert back
|
| Barbados | 684 (Mi657) | Stamp-on-stamp: 558 | 1986 | hurricane season: "hurricane hunter McDonnell F2H-2P Banshee" |
| British Antarctic Territory | 179 (Mi180) | | 1991 | "chemical studies in the ozone layer"), by aircraft |
| British Antarctic Territory | 176-179 fdc | One of four stamps on FDC, also insert and insert back
|
| Cayman Islands | 631 (Mi645) | | 1991 | hurricane awareness: "Lockheed WP-3D Orion monitors hurricane eye" |
| Cayman Islands | 628-631 fdc | One of four stamps and (pictorial) cancel and (?) cachet on FDC
|
| China (People's Republic) | 3069 (Mi2197) | | 2000 | Cloud seeding aircraft for rain enhancement project |
| China (People's Republic) | 3066-3069 fdc1 | One of four stamps on FDC, also back
|
| China (People's Republic) | 3066-3069 fdc2 | One of four stamps on FDC (different)
|
| Dubai | 121 (Mi365) | | 1970 | Research aircraft (unknown type) |
| French Southern and Antarctic Territories | C92 (Mi218) | | 1986 | Research aircraft (unknown type); instrument package descending by parachute was possibly released from the aircraft. |
| French Southern and Antarctic Territories | C92 fdc1 | Stamp on FDC
|
| French Southern and Antarctic Territories | C92 fdc2 | Stamp and (Éditions J.F.) cachet on FDC
|
| French Southern and Antarctic Territories | C92 cover (Mi218 cover) | Stamp and (blue printed) cachet on cover | 1986 | Research aircraft (unknown type); instrument package descending by parachute was possibly released from the aircraft. |
| Great Britain | None | (Pictorial) cancel and (multi-color printed) cachet on cover | 1997 | 55th anniv. Meteor. Research Flight group, Boscombe Down, England; various aircraft used by the Group |
| Grenada | 2140 (Mi2498) | | 1992 | "Endosat, proposed robot plane for atmospheric climate research" |
| Grenada | 2140+2147 fdc | One of two stamps on FDC
|
| Qatar | 351 (Mi565) | | 1973 | Research aircraft (unknown type) |
| Russia (USSR) | None | Printed stamp and (pictorial) cancel and (multi-color printed) cachet on postal card | 1984 | Research aircraft (unknown type) |
| Russia (USSR) | None | Printed stamp and (pictorial) cancel (different) and (multi-color printed) cachet on postal card | 1984 | Research aircraft (same as above, in stamp and cachet), different research aircraft (in cancel) |
| Thailand | 1671 (Mi1714) | One of MS5 (1673a (1669-1673 + label)) (Mi1713-1717) | 1996 | Royal rainmaking project: airplane seeding clouds |
| Thailand | 1669-1673 fdc | One of five stamps on FDC, also detail on back
|
| United States | UX57 fdc | Postal card FDC | 1970 | hurricane hunters: the 53rd Weather Reconnaissance Squadron |
