Included here are aircraft that were known to be in Spain at the outbreak of the civil war, but whose participation in the conflict is not recorded, plus some aircraft that are reported to have been used in Spain, but for which there is no documentary evidence.
| Adaro I.E.7 Chirta | ![]() | |
| Aero A 102 | ![]() | There is a report of a high-winged monoplane fighter being used by the Republicans which does not fit the description of any of the aircraft that took part. By a process of elimination, it has been suggested that it may have been the prototype Aero A 102, but there is no additional evidence for this. |
| Aeronca C -3 | ![]() | |
| American Eagle-Lincoln Eaglet B-31 | ![]() | |
| Avro 504K | ![]() | |
| Blackburn L. 1C Bluebird IV | ![]() | |
| Bloch 300 | ![]() | |
| Breguet 27S | ![]() | |
| Breguet-Wibault 670T | ![]() | |
| Bristol F2B | ![]() | |
| Caudron C-510 Pélican | ![]() | |
| Caudron C-635 Simoun | ![]() | |
| Dewoitine D 31-01 | ![]() | |
| Dewoitine D 35 | ![]() | |
| Farman F-200 | ![]() | |
| Farman F-400 series | ![]() | |
| Farman F-430 series | ![]() | |
| González Gil-Pazó GP-2 | ![]() | |
| Gourdou-Leseurre GL-410 | ![]() | |
| Gourdou-Leseurre GL-482 | ![]() | |
| Hanriot HD-14/17 | ![]() | |
| Heinkel He 112 V8 | ![]() | According to Bernád (1996), the He 112 V8 prototype served very briefly in Spain, coded 8•1, but suffered engine problems, and was returned to Germany. Howson gives 8•1 as the code assigned to a Breda Ba 64. |
| Junkers G 24 | ![]() | |
| Klemm L 20 | ![]() | |
| Klemm L 25 | ![]() | |
| Koolhoven FK 40 | ![]() | |
| Letov S 131 | ![]() | Omega models started marketing a kit of this aircraft in Republican markings in 2008 - They usually do good research, but I still don't know what this kit is based on ('though a profile of the type has appeared in a rather dodgey Russian book) |
| Letov S 431 | ![]() | |
| Letov S 328 | ![]() | |
| Lioré et Olivier 20 | ![]() | |
| Loire 250 | ![]() | |
| Loring E-11 | ![]() | |
| Loring X | ![]() | |
| Nieuport-Delage NiD 82 | ![]() | |
| Maillet-Taupin-Lignel 20 and 21 | ![]() | |
| Mignet H.M. 14 Pou du Ciel | ![]() | |
| Morane-Saulnier MS-60 | ![]() | License-built de Havilland DH 60 Moth. Some of the DH 60s in Spain have been identified by contemporary accounts as MS-60s, but it is unclear whether this was true. |
| Morane-Saulnier MS-345 | ![]() | The aircraft shown to the left is a MS-340, but the MS-345 should have been similar in appearance. |
| P.W.S. 16 | ![]() | 20 PWS 16s were sold to Portugal by Poland when they were replaced by PWS 26s in Polish service. There are rumours that many of these aircraft were diverted to the Republicans, although this is unlikely given the enmity between Portugal and the Spanish republic. |
| Pallarols 40A | ![]() | |
| Aekka-Raab R-27 and R-29 | No image available - Can you help? | There are reports of these two models of fighter being manufactured by Antonio Raab in Spain. For more information, please see: http://en.wikipedia.org/wiki/AEKKEA-RAAB |
| Romeo Ro-5 | ![]() | |
| RWD 8 | ![]() | At least one RWD 8 was based in Spain before the Civil War, but whether it survived to take part in the conflict is not known. |