Sikorsky RS

The Sikorsky RS was a designation used by the United States Navy for a number of different Sikorsky twin-engined amphibious flying boats.^[1]

Variants

RS-1: Designation for three Sikorsky S-41 flying boats for evaluation.^[1]
XRS-2: Designation for two Sikorsky PS-2 flying boats converted as transports.^[1]
RS-3: Four Sikorsky PS-3 flying boats converted as transports.^[1]
RS-4: Designation for two impressed Sikorsky S-38A flying boats.^[1]
RS-5: Designation for two impressed Sikorsky S-41 flying boats.^[1]

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v t e Sikorsky aircraft
Fixed-wing aircraft (company designations)	S-1 S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-9 S-10 S-11 S-12 S-13 S-14 S-15 S-16 S-17 S-18 S-19 S-20 S-21 S-22 S-23 S-24 S-25 S-26 S-27 S-28 S-29-A S-30 S-31 S-32 S-33 S-34 S-35 S-36 S-37 S-38 S-39 S-40 S-41 S-42 S-43 VS-44 S-45
Fixed-wing aircraft (military designations)	C-6 C-28 JRS JR2S PS RS XBLR-3 XPBS XSS XV-2
Helicopters (company designations)	VS-300 (S-46) S-47 S-48 S-49 S-51 S-52 S-53 S-54 S-55 S-56 S-57 S-58 S-59 S-60 S-61 S-61L/N S-61R S-62 S-63 S-64 S-65 S-66 S-67 S-68 S-69 S-70 S-71 S-72 S-73 S-74 S-75 S-76 S-80 S-92/H-92 S-97 S-300 S-333 S-434
Helicopters (military designations)	SH-3 HH-3E/F R-4 H-5 H-6 H-18 H-19 H-34 CH-37 XH-39 HH-52A CH-53 CH-53E CH-53K CH-54 HH-60G HH-60J MH-60R/S SH-60B/F SH-60J/K UH-60 VH-60 RAH-66 CH-124 CH-148
Experimental aircraft	Cypher Cypher II Firefly X2 XBLR-3 XV-2

v t e USN/USMC transport designations 1931–1962
Atlantic Aircraft	RA
Budd	RB
Curtiss	RC R2C⁴ R3C⁴ R4C R5C
Douglas	RD R2D R3D R4D R5D R6D
Bellanca	RE
Kinner	RK
Kreider-Reisner	RK² R2K
Martin	RM
Lockheed	RO R2O R3O R4O R5O R6O R7O-1/-2 to "V"
Stinson	RQ R2Q² R3Q
Fairchild	RQ R2Q R3Q² R4Q
Ford	RR
Sikorsky	RS
Northrop	RT
Lockheed	from "O" R6V R7V-1/-2 R8V
Convair	RY R2Y R3Y R4Y
¹ Not assigned • ² Assigned to a different manufacturer's type • ³ Sequence restarted • ⁴ Assigned to a different class of aircraft