History
The Ryan Aeronautical Company was founded in 1934 by Claude T. Ryan and was more or less the successor to Ryan Airlines, the firm who had built the Ryan NYP "Spirit of St. Louis".
The first draft of the Ryan ST "Sports Trainer" made its first flight in June 1934.
The performance with the Menasco B-4 of 95 hp was very disappointing. So in 1935, the Ryan ST-A with a Menasco C-4 125 hp was released. One year later, the ST-A Special was released with a Menasco C-4S with turbo and a power of 150 bhp.
The single seat version was the Ryan ST-B.
In 1937 an order was placed by the Mexican Air Force for six ST-A Specials. These were referred to as STM (SportTrainer Military) and had a slightly enlarged cockpit openings because of the chutes the crew carried.
The Ryan STM S2 was a version equipped with EDO Model 1965 floats. Nationalist China received a version with a machine gun under the designation STM-2P.
The USAAC used a few dozen STMs. The Menasco engine proved to be unreliable and Ryan was commissioned to replace this engine with a 440 Kinner radial engine.
Ryan was also commissioned to design a version with the Kinner radial engine as the standard engine. This meant that especially the nose section had to be re-designed.
The hull was broader and rounder and furthermore the rudder, the ailerons and elevators were reviewed.
A version that was developed in the late 1941, early 1942 was the ST-3KR (Kinner Radial), with a more powerful Kinner R-5. Over thousand examples of this version were built under the military designation PT-22.
The ST-4 was a wooden version of the ST-3, designed to be prepared for a shortage of metals such as aluminium.
Versions.
- Ryan ST:
- Prototype and first version with Menasco B-4 of 95 hp; five examples built.
- Ryan ST-A:
- Improved version with Menasco C-4 of 125 hp; 73 examples built.
- Ryan XPT-16: One Ryan ST-A, purchased by the USAAC to be evaluated.
- Ryan XPT-16A: Ryan XPT-16 fitted with a Kinner R-440 radial engine of 125 hp.
- Ryan YPT-16: 15 pre-production aircraft for the USAAC.
- Ryan PT-16A: 14 YPT-16s modified and fitted with a Kinner R-440 engine.
- Ryan ST-A Special:
- Improved ST-A, fitted with a Menasco C4S engine of 150 hp; 10 examples built.
- Ryan ST-B:
- A single-seat version of the ST-A with extra fuel tank.
- Ryan STM:
- 22 examples of the military version of the ST-A Special including enlarged cockpits; a crash bracket incorporated into the front windshield.
- Ryan STM-2: 95 pieces of a variant of the STM for NEIAF and RNlNAS.
- Ryan STM-S2: Thirteen examples for RNlNAS with floats, which was interchangeable with the wheel base.
- Ryan STM-2E: 48 examples of a version with a 165 hp Menasco C4S2, built for China.
- Ryan TM-2P: Two pieces of a single application of the STM-2E with provision of a machine built for China.
- Ryan PT-20: Thirty examples built for the USAAC.
- Ryan PT-20A: USAAC designation for Kinner R-440 equipped PT-20s.
- Ryan STM-2: 95 pieces of a variant of the STM for NEIAF and RNlNAS.
- Ryan ST-W:
- Modified experimental YPT-16 with a Warner Scarab radial engine of 125 hp and one modified USAAC PT-20A with a Super Scarab 160 hp.
- Ryan ST-3:
- Improved version with a wider, rounder body and a Kinner B-5 radial engine of 125 hp; one built.
- Ryan PT-21: Military production version of the Ryan ST-3; Built 100 examples.
- Ryan ST-3KR:
- Version of ST-3 with a stronger Kinner R-5 radial engine of 160 hp; one built.
- Ryan PT-22A: Designation for 25 by the NEIAF ordered examples that were not delivered and taken over by the USAAF.
- Ryan PT-22C: 250 examples of a customized version, fitted with a Kinner R 540-3 engine.
- Ryan PT-22 Recruit: Military production version of the ST-3KR with Kinner R 540-1 engine, 1048 examples built.
- Ryan NR-1: 100 examples built for the US Navy.
- Ryan ST-4:
- One built ST-3 with a wooden hull.
- Ryan YPT-25: Five evaluation examples for USAAC.
| Dimensions: | |||
| Length: | 6,52 m | Wingspan: | 9,12 m |
| Height: | 2,11 m | Wing area: | 11 m2 |
| Weights: | |||
| Empty weight: | 480 kg | Max. start weight: | 726 kg |
| Performances: | |||
| Max. speed: | 257 km/hr | Climbing speed: | - m/min |
| Cruising speed: | 217 km/hr | ||
| Range: | 600 km | Service ceiling: | |
| Miscellaneous: | |||
| Engine type: | One Menasco C-4S rated 150 hp | ||
| Crew: | Two: one instructor plus one pupil | ||
| Armament: | None | ||
In service with RNlNAS and NEIAF.
The Ryan STM was used as primary trainer by the RnlNAS with and without floats at Perak and Morokrembangan.
36 Ryans were transported by ship to Australia and arrived on March 10, 1942 in Sydney.
Initially, it was intended to establish a flying school in Australia. The flying schools of the RNlNAS and the NEIAF were evacuated to Australia.
As the RNlMFS (Royal Netherlands Military Flying School) at Jackson, Mississippi was founded in June 1942 the training in Australia was lapsed and the Ryans were sold to the RAAF.
By lingering over whether or not to evacuate the Ryans of the NEIAF all remaining Ryans of the NEIAF fell into Japanese hands after the capitulation. [I used the capitulation date as date of out of service for all NEIAF-Ryans.]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM-2 & STM-2S
Serial overview RNlNAS and NEIAF.
Serial overview Ryan STM-2 en Ryan STM-2S RNlNAS.
Serial Overview Ryan STM-2 RNlNAS.
| Serial
Serial
|
Constr. nr.
Constr. nr.
|
Date in service
Date in service
|
Date out of service
Date out of service
|
Notes
notes
|
|---|---|---|---|---|
| Ordering date 25-06-1940. Entered service in October 1940. Originally with landing gear, but later twelve float sets were bought. |
||||
| S-11 | 447 | 01-10-1940 | 17-02-1942 | |
| S-12 | 448 | 01-10-1940 | 17-02-1942 | |
| S-13 | 449 | 01-10-1940 | 17-02-1942 | |
| S-14 | 450 | 01-10-1940 | 01-06-1942 | Sold to RAAF in June, became A50-7. |
| S-15 | 451 | 01-10-1940 | 17-02-1942 | |
| S-16 | 452 | 01-10-1940 | 01-06-1942 | Scrapped in June 1942? |
| S-17 | 453 | 01-10-1940 | 01-06-1942 | Sold to RAAF in June , became A50-24 |
| Ordering date 25-06-1940. Entered service in November 1940. Ordinary landing gear. Later twelve float sets were bought. |
||||
| S-18 | 454 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June , became A50-27 |
| S-19 | 455 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June , became A50-25 |
| S-20 | 456 | 01-11-1940 | 21-04-1941 | Crashed. |
| S-21 | 457 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June, 1942 became A50-30. Nowadays (2010) still flying in the USA |
| S-22 | 458 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-17 |
| Ordering date 08-07-1940. Entered service in November 1940. Ordinary landing gear. Later twelve float sets were bought. |
||||
| S-23 | 459 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-11 |
| S-24 | 460 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1042, became A50-15 |
| S-25 | 461 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-33 |
| S-26 | 462 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-21 |
| S-27 | 463 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-12 |
| S-28 | 464 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 4 |
| S-29 | 465 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-22 |
| S-30 | 466 | 01-11-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-18 |
| Ordering date 08-07-1940. Entered service in December 1940. Ordinary landing gear. Later twelve float sets were bought. | ||||
| S-31 | 467 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 2 |
| S-32 | 468 | 01-12-1940 | 17-02-1942 | |
| S-33 | 469 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-34 |
| S-34 | 470 | 01-12-1940 | 17-02-1942 | |
Serial overview Ryan STM-2S RNlNAS.
| Serial
Serial
|
Constr. nr.
Constr. nr.
|
Date in service
Date in service
|
Date out of service
Date out of service
|
Notes
notes
|
|---|---|---|---|---|
| Ordering date 15-08-1940; Float planes; Entered service in October 1940. | ||||
| S-35 | 471 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-23 |
| S-36 | 472 | 01-12-1940 | 17-02-1942 | |
| S-37 | 473 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-1 |
| S-38 | 474 | 01-12-1940 | 01-06-1942 | Scrapped? |
| S-39 | 475 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-9 |
| S-40 | 476 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-31 |
| Ordering date 15-08-1940; Float planes; Entered service in November 1940. | ||||
| S-41 | 477 | 01-12-1940 | 01-06-1942 | Sold to RAAF in June 1942, became A50-10 |
| S-42 | 478 | 01-12-1940 | 17-02-1942 | |
| S-43 | 479 | 01-01-1941 | 01-10-1941 | Crashed. |
| S-44 | 480 | 01-01-1941 | 17-02-1942 | |
| S-45 | 481 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-32 |
| Ordering date 15-08-1940; Float planes; Entered service in January 1941. | ||||
| S-46 | 482 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-19 |
| S-47 | 483 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 5 |
| S-48 | 484 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-28 |
| S-49 | 485 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-14 |
| S-50 | 486 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-16 |
| S-51 | 487 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 8 |
| S-52 | 488 | 01-01-1941 | 17-02-1942 | |
| S-53 | 489 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-13 |
| S-54 | 490 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-26 |
| S-55 | 491 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-20 |
| S-56 | 492 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50-29 |
| S-57 | 493 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 6 |
| S-58 | 494 | 01-01-1941 | 01-06-1942 | Sold to RAAF in June 1942, became A50- 3 |
Serial overview Ryan STM-2 NEIAF.
Of the Netherlands Indies Ryans hardly any information is available.
Where the Dutch Navy decided to evacuate the FLying Schooll to Australia, the NEIAF didn't do the same with their flying school.
All, remaining Ryans were captured by the Japanese after the capitulation.
In overview below I have entered the date of the capitulation as date out of service for all Ryans.
| Serial
Serial
|
Constr. nr.
Constr. nr.
|
Date in service
Date in service
|
Date out of service
Date out of service
|
Notes
notes
|
|---|---|---|---|---|
| R010 | 08-03-1942 | |||
| R011 | 08-03-1942 | |||
| R012 | 08-03-1942 | |||
| R013 | 08-03-1942 | |||
| R014 | 08-03-1942 | |||
| R015 | 08-03-1942 | |||
| R016 | 08-03-1942 | |||
| R017 | 08-03-1942 | |||
| R018 | 08-03-1942 | |||
| R019 | 08-03-1942 | |||
| R020 | 08-03-1942 | |||
| R021 | 08-03-1942 | |||
| R022 | 08-03-1942 | |||
| R023 | 08-03-1942 | |||
| R024 | 08-03-1942 | |||
| R025 | 08-03-1942 | |||
| R026 | 08-03-1942 | |||
| R027 | 08-03-1942 | |||
| R028 | 08-03-1942 | |||
| R029 | 08-03-1942 | |||
| R030 | 08-03-1942 | |||
| R031 | 08-03-1942 | |||
| R032 | 08-03-1942 | |||
| R033 | 08-03-1942 | |||
| R034 | 08-03-1942 | |||
| R035 | 08-03-1942 | |||
| R036 | 08-03-1942 | |||
| R037 | 08-03-1942 | |||
| R038 | 08-03-1942 | |||
| R039 | 08-03-1942 | |||
| R040 | 08-03-1942 | |||
| R041 | 08-03-1942 | |||
| R042 | 08-03-1942 | |||
| R043 | 08-03-1942 | |||
| R044 | 08-03-1942 | |||
| R045 | 08-03-1942 | |||
| R046 | 08-03-1942 | |||
| R047 | 08-03-1942 | |||
| R048 | 08-03-1942 | |||
| R049 | 08-03-1942 | |||
| R050 | 08-03-1942 | |||
| R051 | 08-03-1942 | |||
| R052 | 08-03-1942 | |||
| R053 | 08-03-1942 | |||
| R054 | 08-03-1942 | |||
| R055 | 08-03-1942 | |||
| R056 | 08-03-1942 | |||
| R057 | 08-03-1942 | |||
| R058 | 08-03-1942 | |||
| R059 | 08-03-1942 | |||
| R060 | 08-03-1942 | |||
| R061 | 08-03-1942 | |||
| R062 | 08-03-1942 | |||
| R063 | 08-03-1942 | |||
| R064 | 08-03-1942 | |||
| R065 | 08-03-1942 | |||
| R066 | 08-03-1942 | |||
| R067 | 08-03-1942 | |||
| R068 | 08-03-1942 | |||
| R069 | 08-03-1942 |
1/72nd Scale
Kits
- Dujin
- Kit A72110: A resin kit of a Ryan PT20A/21/22 Recruit
- High Planes
- Kit 72007: Ryan STM/PT20 (USAAF, NEIAF)
- MPM
- Kit 72084: Ryan PT-20/STM-2 (wheels & floats)
- Rareplanes
- Kit 1011: A vacu formed kit
A model of a Ryan STM-2 of the RNlNAS, built by Peter Banis.
Modelling add-on
- --
- Set --: --
Decals
- Dutch Decal
- Set 72043: Set with orange triangles for e.g. two schemes of Ryan STM-2 S-26.
- Set 72045: Set with orange triangles for e.g. Ryan STM-2 RO30 and Ryan STM-2 S-51.
- Set 72068: Set with orange triangles for e.g. Martin WH-1, Consolidated PBY-5/A, DH-85, DB-7B, Brewster B-340 (What if..), Dornier Do215B (What if..), STM Ryan, Fokker D.XXIII .
- FlevoDecal
- Set FD72-012: Set met opties voor vijf Brewsters, Curtiss Hawk 75, Curtiss CW-21 en CW-22; Messerschmidt Me-108, Ryan STM, Lockheed 12 en Lodestar, Bücker Bu-131 en Martin WH-1 en WH-2
- Set FD72-023: Royal Netherlands Navy over the Dutch East Indies 1939-1942
1/48th Scale
Kits
- Testors
- Kit 510: Ryan PT-20/STM-S2
Modelling add-on
- --
- Set -: -
Decals
- FlevoDecal
- Set FD48-012: Set for e.g. five Brewsters, Curtiss Hawk 75, Curtiss CW-21 and CW-22; Messerschmidt Me-108, Ryan STM, Lockheed 12 and Lodestar, Bücker Bu-131 and Martin WH-1 and WH-2
- Set FD48-016: Royal Netherlands Navy over the Dutch East Indies 1939-1942
| Scheme | Colour name | FS number | BS number | Humbrol | XtraColor | Vallejo Model Color | Vallejo Model Air | ||
|---|---|---|---|---|---|---|---|---|---|
| Ryan STM-2 and STM--2S RNlNAS | |||||||||
| Standard #1: Delivery scheme | Overall | Bare metal (fuselage) Wings etc. aluminium Dope |
56 / 191 | X216 | 70.864 | ||||
| From beginning 1941 camouflage applied on largest part of the aircraft | |||||||||
| Standard #2 | Olive green | Jong blad ? | 149 | X114 | 70.895 ? | 71.034 | |||
| Ryan STM-2 NEIAF | |||||||||
| Standard #1 | Overall | Bare metal (fuselage) Wings etc. aluminium Dope |
56 / 191 | X216 | 70.864 | ||||
| Standard #2 | Overall | Jong blad | 149 | X114 | 70.895 ? | 71.034 | |||
Check www.paint4models.com for an extensive conversion table with lots of colour and paint systems.
Ryan STM RNlNAS
Ryan STM NEIAF
Literature.
| Cockpit, nummer 10, oktober 1971 jaargang 12, oktober 1971: Meer zeldzame foto's van Nederlandse Ryans | Hugo Hooftman | Pag. 264 - 268 | 1971 | COCKPIT-uitgeverij, Bennekom |
| Zestig jaar Marineluchtvaartdienst in Beeld. | Hugo Hooftman | Pag. 74 - 76 | 1977 | Uitgever: Europese Bibliotheek, Zaltbommel |
| Nederlandse Marinevliegtuigen | Thijs Postma & Nico Geldhof | Pag. 41 | 1978 | Uitgever: Omniboek, 's Gravenhage |
| Militaire Luchtvaart in Nederlandsch-Indië in beeld. Deel 1 | Hugo Hooftman | Pag. 150 - 155 | 1978 | Uitgever: Europese Bibliotheek, Zaltbommel |
| AVIA: 41e jaargang nummer 3: Foto van Ryan STM-S2 S-11 (met or. driehoek en drijvers) | Pag. 118 - | 1982 | Uitgevers Wyt, Rotterdam | |
| 40 Jaar luchtvaart in Indië | Gerard Casius & Thijs Postma | Pag. , 63 | 1986 | Uitgeverij De Alk, Alkmaar |
| 70 Jaar Marine-LuchtvaartDienst | Nico Geldhof | Pag. 59 - 63 | 1987 | Uitgeverij Eisma b.v., Leeuwarden |
| Camouflage en Kentekens | J.Greuter e.a. | 1997 | Bonneville – Bergen (NH) | |
| 85 Jaar Marineluchtvaartdienst in beeld Van Farman tot NH 90 Helikopter | Peter Korbee | Pag. 66 - 67 | 2002 | Uitgever: Korbee MLD Promotie, Valkenburg |
Websites.
--
Nederlands (nl-NL) 
English (United Kingdom)