Sikorsky HO4S-3

1952

Re-engined US Navy & Canadian version with 700HP Wright R-1300 Cyclone engine. Redesignated UH-19F (American variant) & HO4S-3 (Canadian & Dutch variants) in 1962. 103 built: including 61 for USN, 3 for Dutch MLD, 15 for UK RN as Whirlwind HAS.22, 10 for RCN, & 14 for USCG.

HO4S-3: 133844 - 133853, contract NOa(s) 42-471 (MDAP) cancelled, airframes not built.

HO4S-3: 138432 - 138459, contract cancelled, airframes not built.

Airframes (105)

C/N	Model	Built	Reg
55-455	ho4s-3	1954	133739 WV199	w/o 1957
55-456	ho4s-3	1953	133740 WV200	w/o 1956
55-457	ho4s-3	1953	133741 WV201	w/o 1954
55-459	ho4s-3	1951	1281 N604X
55-471	ho4s-3	1953	133777 8-2 076
55-472	ho4s-3	1953	133778 8-3 077	V w/o 1962
55-473	ho4s-3	1953	133779 8-4	w/o 1959
55-474	ho4s-3	1953	133742 WV202	w/o 1958
55-475	ho4s-3	1953	133743 WV203 ZS-HDO
55-476	ho4s-3	1953	133744 WV204 WV204
55-477	ho4s-3	1953	133745 WV205
55-478	ho4s-3	1953	133746 WV218
55-479	ho4s-3	1953	133747 WV219
55-480	ho4s-3	1953	133748 WV220
55-481	ho4s-3	1953	133749 WV221	w/o 1957
55-497	ho4s-3	1953	133750 WV222
55-498	ho4s-3	1953	133751 WV223 ZS-HDM A5
55-499	ho4s-3	1953	133752 WV224 WV224
55-500	ho4s-3	1953	133753 WV225	w/o 1955
55-501	ho4s-3	1953	1298 N1023
55-502	ho4s-3	1953	1299	w/o 1956
55-503	ho4s-3	1953	1300 N15503
55-504	ho4s-3	1953	138494
55-505	ho4s-3	1953	138495
55-506	ho4s-3	1953	138496
55-523	ho4s-3	1953	1301 N1027
55-524	ho4s-3	1953	1302	w/o 1959
55-525	ho4s-3	1953	1303
55-526	ho4s-3	1953	138497
55-527	ho4s-3	1953	138498

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Operators

1951-1966	US Coast Guard S-55 H-19
1951-1957	US Navy S-55 H-19
1952-1968	Royal Canadian Navy (1945-1968) S-55 H-19
1952-1962	Fleet Air Arm S-55 H-19
1953-1963	Marine Luchtvaartdienst S-55 H-19
1956-1968	Suid-Afrikaanse Lugmag S-55 H-19
1971-	Aviodome