Sikorsky H-5 helicopter

E460066

military helicopter rescue helicopter rotary-wing aircraft utility helicopter

The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.

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All labels observed (3)

Label	Occurrences
Sikorsky H-5	2
Sikorsky H-5 helicopter canonical	1
Sikorsky S-55	1

How this entity was disambiguated

This entity first appeared as the object of triple T4623661 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Sikorsky H-5 helicopter
Context triple: [Canadian Warplane Heritage Museum, hasNotableAircraft, Sikorsky H-5 helicopter]

A. Sikorsky S-61A-4 Nuri
The Sikorsky S-61A-4 Nuri is a license-built variant of the Sikorsky S-61/Sea King helicopter, used primarily by Malaysia for transport, utility, and search-and-rescue missions.
B. Bell UH-1 Iroquois
The Bell UH-1 Iroquois, commonly known as the "Huey," is a widely used American military utility helicopter famed for its extensive service during the Vietnam War and its iconic status in aviation history.
C. Sikorsky VH-3D Sea King
The Sikorsky VH-3D Sea King is a twin-engine, medium-lift helicopter used by the United States Marine Corps as a presidential transport aircraft.
D. Bell 212 helicopter
The Bell 212 helicopter is a twin-engine, medium utility helicopter widely used for military transport, search and rescue, and general support missions around the world.
E. OH-1 reconnaissance helicopter
The OH-1 reconnaissance helicopter is a Japanese twin-engine observation and light attack rotorcraft developed by Kawasaki for the Japan Ground Self-Defense Force, featuring advanced sensors and high maneuverability for battlefield surveillance.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Sikorsky H-5 helicopter
Target entity description: The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.

A. Sikorsky S-61A-4 Nuri
The Sikorsky S-61A-4 Nuri is a license-built variant of the Sikorsky S-61/Sea King helicopter, used primarily by Malaysia for transport, utility, and search-and-rescue missions.
B. Bell UH-1 Iroquois
The Bell UH-1 Iroquois, commonly known as the "Huey," is a widely used American military utility helicopter famed for its extensive service during the Vietnam War and its iconic status in aviation history.
C. Sikorsky VH-3D Sea King
The Sikorsky VH-3D Sea King is a twin-engine, medium-lift helicopter used by the United States Marine Corps as a presidential transport aircraft.
D. Bell 212 helicopter
The Bell 212 helicopter is a twin-engine, medium utility helicopter widely used for military transport, search and rescue, and general support missions around the world.
E. OH-1 reconnaissance helicopter
The OH-1 reconnaissance helicopter is a Japanese twin-engine observation and light attack rotorcraft developed by Kawasaki for the Japan Ground Self-Defense Force, featuring advanced sensors and high maneuverability for battlefield surveillance.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	military helicopter ⓘ rescue helicopter ⓘ rotary-wing aircraft ⓘ utility helicopter ⓘ
alsoKnownAs	HO2S NERFINISHED ⓘ R-5 NERFINISHED ⓘ S-48 NERFINISHED ⓘ
capacity	2 to 3 passengers ⓘ
category	1940s United States helicopters ⓘ military utility aircraft ⓘ search and rescue aircraft ⓘ
configuration	single main rotor ⓘ tail rotor ⓘ
countryOfOrigin	United States of America ⓘ surface form: United States
crew	1 pilot ⓘ
developedInPeriod	post–World War II era ⓘ
engineType	radial piston engine ⓘ
enteredService	mid-1940s ⓘ
firstFlightDate	1943 ⓘ
historicalSignificance	helped establish helicopter doctrine for the U.S. armed forces ⓘ one of the first practical military helicopters ⓘ
landingGear	fixed landing gear ⓘ
manufacturer	Sikorsky Aircraft NERFINISHED ⓘ
notableFeature	external litters for casualty evacuation ⓘ side-by-side seating in cockpit ⓘ
pioneered	early rotary-wing search-and-rescue operations ⓘ helicopter-based medical evacuation ⓘ
powerplant	single piston engine ⓘ
primaryMission	liaison and observation ⓘ rescue of downed aircrew ⓘ
role	medevac ⓘ search and rescue ⓘ utility ⓘ
successor	Sikorsky H-19 Chickasaw NERFINISHED ⓘ
tailConfiguration	conventional tail boom ⓘ
usedBy	Civil operators ⓘ French Air Force NERFINISHED ⓘ Royal Air Force ⓘ United States Air Force ⓘ United States Army Air Forces NERFINISHED ⓘ United States Coast Guard NERFINISHED ⓘ United States Navy ⓘ
usedFor	air-sea rescue ⓘ communications flights ⓘ training ⓘ
usedInConflict	Korean War NERFINISHED ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Canadian Warplane Heritage Museum → hasNotableAircraft → Sikorsky H-5 helicopter ⓘ

R-5 → successor → Sikorsky H-5 helicopter ⓘ

this entity surface form: Sikorsky H-5

H-19 Chickasaw → civilDesignation → Sikorsky H-5 helicopter ⓘ

this entity surface form: Sikorsky S-55

Igor Sikorsky → hasPartInName → Sikorsky H-5 helicopter ⓘ