Sikorsky HO2S/HO3S series






Last updated on: July 27, 2017

This is just for those helos that received Navy/Marine Corps Bureau Numbers, even those that were transferred from the USAF.

This is a work in progress and any help would be appreciated. Information on these planes is rather difficult to locate online and this work will remain incomplete unless you the readers offer to help me. Please feel free to pass along any information that you might have.

At the end of this page is a list of people who have graciously offered their help. Thank you all very much!


HO3S-1 b/n 57995
*8/16/1953: Crashed into the Yellow Sea during a rescue attempt.


HO3S-1 b/n 57996
*--info needed.--


HO3S-1 b/n 57997
*--info needed.--


HO3S-1 b/n 57998
*1951-52: HU-1 as xx-22.
*9/15/1952: Written off.


HO2S-1 b/n 75689
*ex-US Army YR-5A s/n 43-46613.
*1/1946: Transferred to the US Coast Guard.
*10/1950: Crashed. Date?


HO2S-1 b/n 75690
*ex-US Army YR-5A s/n 43-46618.
*1946: VX-3.
*1/1946: Transferred to the US Coast Guard.
*6/1946: Struck off charge.


HO3S-1 b/n 122508
*1952: HU-2.
*9/4/1952: Crashed into the sea off Paengnyong-Do Island, Korea.


HO3S-1 b/n 122509
*Sold on the civilian market and registered as N4144A, CF-JNZ, and N5559A.


HO3S-1 b/n 122510
*9/20/1950: Written off.


HO3S-1 b/n 122511
*--info needed.--


HO3S-1 b/n 122512
*Sold on the civilian market and registered as N391T.


HO3S-1 b/n 122513
*1952: HU-1.
*2/8/1952: Crashed in North Korea.


HO3S-1 b/n 122514
*1950: VMO-6.
*9/21/1950: Crashed near Yangjae-ri, Korea.


HO3S-1 b/n 122515
*1/6/1956: Struck off charge.
*Sold on the civilian market and registered as N4145A and CF-KHK.
*Currently preserved onboard the USS Midway Museum, CA.


HO3S-1 b/n 122516
*8/4/1950: Written off.


HO3S-1 b/n 122517
*1951: VMO-6.
*4/13/1951: Shot down by ground fire over Korea.


HO3S-1 b/n 122518
*1951: VMO-6.
*3/12/1951: Crashed after take-off in Korea.


HO3S-1 b/n 122519
*1950: HU-1.
*9/11/1951: Ditched at sea off US Philippine Sea due to engine failure.


HO3S-1 b/n 122520
*1948-61: Bailed to NACA as 201.
*9/6/1961: Written off in a ground accident.


HO3S-1 b/n 122521
*1952: VMO-6.
*1/23/1952: Crashed near Chik-Tong, Korea.


HO3S-1 b/n 122522
*Sold on the civilian market and registered as N5555A.


HO3S-1 b/n 122523
*6/30/1957: Struck off charge.
*Salvaged.


HO3S-1 b/n 122524
*--info needed.--


HO3S-1 b/n 122525
*--info needed.--


HO3S-1 b/n 122526
*Sold on the civilian market and registered as N5554A.


HO3S-1 b/n 122527
*1948: ? as XC-34.


HO3S-1 b/n 122528
*1952: MAMS-12.
*6/15/1952: Lost control and crashed near K-6 Airbase, South Korea.


HO3S-1 b/n 122529
*12/14/1955: Struck off charge.
*Salvaged.


HO3S-1 b/n 122709
*Sold on the civilian market and registered as N4957C.


HO3S-1 b/n 122710
*7/24/1953: Crashed into the sea off Yo-do, Korea.


HO3S-1 b/n 122711
*--info needed.--


HO3S-1 b/n 122712
*1951: HU-2.
*5/24/1951: Crashed in Korea.


HO3S-1 b/n 122713
*--info needed.--


HO3S-1 b/n 122714
*--info needed.--


HO3S-1 b/n 122715
*1951: HU-2 as UP-27.
*1951: HU-2.
*7/3/1951: Crashed near Kosong, Korea.


HO3S-1 b/n 122716
*1950-51: HU-1 as UP-27.


HO3S-1 b/n 122717
*--info needed.--


HO3S-1 b/n 122718
*--info needed.--


HO3S-1 b/n 122719
*1952: HU-1.
*4/30/1952: Ditched into the sea after take-off from USS Princeton.


HO3S-1 b/n 122720
*1950: HU-1.
*9/25/1950: Crashed into the Han River near Kimpo, South Korea due to battle damage.


HO3S-1 b/n 122721
*Sold on the civilian market and registered as N5553A.


HO3S-1 b/n 122722
*--info needed.--


HO3S-1 b/n 122723
*1951: HU-2.
*3/31/1951: Crashed while landing in Korea.


HO3S-1 b/n 122724
*--info needed.--


HO3S-1 b/n 122725
*1950: VC-50.
*7/4/1950: Ditched into the sea off USS Philippine Sea due to engine failure.


HO3S-1 b/n 122726
*1951: HU-1.
*1/9/1951: Written off in an accident onboard USS Philippine Sea. Repaired?
*12/3/1951: Hit the conning tower of a submarine and crashed. Details?


HO3S-1 b/n 122727
*Sold on the civilian market and registered as N4958C.


HO3S-1 b/n 122728
*--info needed.--


HO3S-1 b/n 123118
*2/3/1954: Written off.


HO3S-1 b/n 123119
*2/1953: Written off. Date?


HO3S-1 b/n 123120
*MAMS-33 as WM-11.


HO3S-1 b/n 123121
*1951: HU-1.
*12/14/1951: Crashed into the sea off Chodo Island, Korea.


HO3S-1 b/n 123122
*1950: HU-1.
*6/25/1950: Crashed into Kanayut Lake, AK.


HO3S-1 b/n 123123
*1952: HU-1.
*7/20/1952: Crashed into the sea off Korea.


HO3S-1 b/n 123124
*--info needed.--


HO3S-1 b/n 123125
*1951: HU-1.
*8/13/1951: Crashed near NAAS Miramar, CA.


HO3S-1 b/n 123126
*--info needed.--


HO3S-1 b/n 123127
*1952: HU-1.
*11/28/1952: Crashed into the sea off USS Valley Forge.


HO3S-1 b/n 123128
*--info needed.--


HO3S-1 b/n 123129
*1954: HU-1 as UP-45.


HO3S-1 b/n 123130
*1952: HU-1.
*12/21/1952: Crashed into the sea.


HO3S-1 b/n 123131
*--info needed.--


HO3S-1 b/n 123132
*Sold on the civilian market and registered as N4061A.


HO3S-1 b/n 123133
*Sold on the civilian market and registered as N9986Z and CS-HAE.


HO3S-1 b/n 123134
*1951: HU-1 as UP-38.


HO3S-1 b/n 123135
*--info needed.--


HO3S-1 b/n 123136
*Sold on the civilian market and registered as N4959C.


HO3S-1 b/n 123137
*Sold on the civilian market and registered as N5558A.


HO3S-1 b/n 123138
*--info needed.--


HO3S-1 b/n 123139
*Sold on the civilian market and registered as N5556A.


HO3S-1 b/n 123140
*--info needed.--


HO3S-1 b/n 123141
*--info needed.--


HO3S-1 b/n 123142
*--info needed.--


HO3S-1 b/n 123143
*--info needed.--


HO3S-1 b/n 124334
*Sold on the civilian market and registered as N6881C.


HO3S-1 b/n 124335
*--info needed.--


HO3S-1 b/n 124336
*--info needed.--


HO3S-1 b/n 124337
*--info needed.--


HO3S-1 b/n 124338
*--info needed.--


HO3S-1 b/n 124339
*--info needed.--


HO3S-1 b/n 124340
*1952: HU-1.
*2/8/1952: Crashed in North Korea.


HO3S-1 b/n 124341
*--info needed.--


HO3S-1 b/n 124342
*1951: VMO-6.
*9/22/1951: Crashed near Sudong Myon, Korea.


HO3S-1 b/n 124343
*1952: VMO-6.


HO3S-1 b/n 124344
*Sold on the civilian market and registered as N5182V.
*Currently preserved at the MCAS Quantico Museum, VA.


HO3S-1 b/n 124345
*Sold on the civilian market and registered as N2842D, CF-FDF, and C-FFDF.


HO3S-1 b/n 124346
*11/1951: Crashed on Puffin Island, Kodiak, AK. Date?


HO3S-1 b/n 124347
*--info needed.--


HO3S-1 b/n 124348
*2/3/1952: Crashed on take-off from MCAS Cherry Point, NC.


HO3S-1 b/n 124349
*Sold on the civilian market and registered as N809.


HO3S-1 b/n 124350
*1953: HU-1 as UP-21.
*Sold on the civilian market and registered as N5557A.


HO3S-1 b/n 124351
*--info needed.--


HO3S-1 b/n 124352
*Currently preserved at the US Army Aviation Museum at Fort Rucker, AL.


HO3S-1 b/n 124353
*--info needed.--



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For their assistance in various parts of this project, I would like to give thanks to the following individual people...

xxx