Known as HO3S-1 in USMC service.
| C/N | Built as | Year | History |
| 51-02 | | 1946 |  5102 : ex N92800, dd Jul 1951 to Aéronavale. 58S, coded 58-10+
|
| 51-06 | | 1946 | 5106 : ex N92804, dd Feb 1952 to Aéronavale. 58S coded 58-11.+
|
| 51-102 | | |  ZS-HBT : ex A-1. Displayed at SAAF Museum, Ysterplaat by 1979
A1 : SAAF. preserved museum Swartkop (FASK)
|
 | 51-13  | | |  LV-YXP : Secretaria de Aeronautica d/d 30abr49; 02aug62 picture+
|
| 51-164 | | |  ? : FAV d/d 1947
|
| 51-17 | | 1947 |  G-AJHW : One of six S-51s imported by Westlands for evaluation a+
WB220 : ex G-AJHW. To RN for a short period in 1949 for 705Sqn +
 A80-374 : After more work as G-AJHW, including service with Briti+
Preserved RAAF Museum, Point Cook by 1979, still there +
|
| 51-171 | | | YV-O-MAC-2 : FAV d/d 1947
|
| 51-183 | | |  49-1999 :  USAF H-5H-SI; 1960s pictured unk location; to civ; 199+
|
| 51-184 | | | 49-2000 : USAF H-5H-SI
08feb52 landed on board the RCN destroyer Sioux off Kor+
|
| 51-26  | | 1948 | G-AJOP : Sikorsky S-51 f/f 02jun47 at Stratford, CT, USA;
to U+
VW209 : MoD, 10oct47 to RAE Farborough; w/o 26sep51 heavy landi+
to RNEC Manadon during Jan 1954 (by road from Boscombe +
VW209 : to A2339, unk; scr Abbotsinch, UK, 1961; last seen apr+
|
| 51-33 | | |  8-1 : NRN
|
| 51-34 | | | G-AJOV : BEA 1947-1954
G-AJOV : 1954-1957, to Canada
CF-JTQ : to N4917E
N4917E :
|
| 51-36 | | | 47-484 : U.S. Army Air Corps R5F
N92868 Carolinas Aviation Museum : N92868 had been assigned to a U.S. Army Air Corps R-5F +
|
| 51-38 | | | LV-XXQ : Secretaria de Aeronautica d/d 30abr49; wfu 10jun53
|
| 51-55 | | | LV-QQU : Secretaria de Aeronautica d/d 30abr49; wfu 23jan67
|
| 51-56 | | | LV-XXS : Secretaria de Aeronautica d/d 30abr49; reserial LQ-XXS;+
|
| 51-60 | | | LV-XXT : Secretaria de Aeronautica d/d 30abr49; w/o 24sep53 in A+
|
| 51-61 | | | LV-XXR : Secretaria de Aeronautica d/d 30abr49; 1951 to Policia +
LQ-XXR : Policia Federal d/d 1951; ex LV-XXR; wfu 1957; 1960 to +
PM-20 : Prefectura Nacional Maritima d/d 1961; ex LQ-XXR; wfu +
|
| 51-66 | | | LV-XXV : Secretaria de Aeronautica d/d 30abr49; to Direccion Gen+
|
| 51-67 | | | LV-XXW : Secretaria de Aeronautica d/d 30abr49; wfu 30aug61
|
| 51-72 | | | LV-XXY : Secretaria de Aeronautica d/d 30abr49; wfu 03feb67
|
| 51-73 | | | LV-XYD : Secretaria de Aeronautica d/d 30abr49; wfu 15dec50
|
| 51-78 | | | LV-XYE : Secretaria de Aeronautica d/d 30abr49; wfu 30aug61
|
| 51-79 | | | LV-XYF : Secretaria de Aeronautica d/d 30abr49; wfu 1967
|
| 51-84 | | | LV-XYG : Secretaria de Aeronautica d/d 30abr49; wfu 03feb67
|
| 51-85 | | | LV-XYH : Secretaria de Aeronautica d/d 30abr49; wfu 07sep66
|
| 51-90 | | | LV-XYI : Secretaria de Aeronautica d/d 30abr49; wfu 30dec66
|
| 51-91 | | | LV-XXZ : Secretaria de Aeronautica d/d 30abr49; wfu 03feb67
|
28 C/N. 
Westland dragonfly 
