Sikorsky S‑40
E611551
The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sikorsky S‑40 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6669243 — 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 S‑40 Context triple: [Pratt & Whitney Hornet, application, Sikorsky S‑40]
-
A.
Sikorsky S‑38
The Sikorsky S‑38 was a twin‑engine amphibious flying boat of the late 1920s and early 1930s, used for both commercial and exploratory aviation and noted for its distinctive twin‑boom tail.
-
B.
Bell H-13 Sioux
The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
-
C.
Curtiss H-16 flying boat
The Curtiss H-16 was a large American World War I-era patrol flying boat used primarily by the U.S. Navy and British forces for maritime reconnaissance and anti-submarine warfare.
-
D.
Sikorsky H-5 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.
-
E.
Hughes H-4 Hercules
The Hughes H-4 Hercules, nicknamed the "Spruce Goose," is a massive experimental World War II-era flying boat and the largest wooden aircraft ever built.
- 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 S‑40 Target entity description: The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.
-
A.
Sikorsky S‑38
The Sikorsky S‑38 was a twin‑engine amphibious flying boat of the late 1920s and early 1930s, used for both commercial and exploratory aviation and noted for its distinctive twin‑boom tail.
-
B.
Bell H-13 Sioux
The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
-
C.
Curtiss H-16 flying boat
The Curtiss H-16 was a large American World War I-era patrol flying boat used primarily by the U.S. Navy and British forces for maritime reconnaissance and anti-submarine warfare.
-
D.
Sikorsky H-5 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.
-
E.
Hughes H-4 Hercules
The Hughes H-4 Hercules, nicknamed the "Spruce Goose," is a massive experimental World War II-era flying boat and the largest wooden aircraft ever built.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
amphibious aircraft
ⓘ
flying boat ⓘ |
| aircraftType | biplane ⓘ |
| airlineLaunchCustomer | Pan American Airways NERFINISHED ⓘ |
| airlineService |
Pan American Airways Caribbean service
ⓘ
Pan American Airways South American service NERFINISHED ⓘ |
| category |
1930s United States airliners
ⓘ
biplanes ⓘ flying boats ⓘ four‑engined tractor aircraft ⓘ |
| construction | metal hull with fabric‑covered wings ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 7 ⓘ |
| cruiseSpeed | ~120 mph ⓘ |
| designGoal | long‑range overwater passenger service ⓘ |
| developedBy | Igor Sikorsky NERFINISHED ⓘ |
| engineConfiguration | four‑engine ⓘ |
| engineCount | 4 ⓘ |
| era | early 1930s ⓘ |
| firstFlight | 1931 ⓘ |
| hullType | flying boat hull ⓘ |
| introduced | 1931 ⓘ |
| landingCapability |
land (using beaching gear or floats)
ⓘ
water ⓘ |
| length | ~72 ft ⓘ |
| manufacturer | Sikorsky Aircraft NERFINISHED ⓘ |
| maximumTakeoffWeight | ~34,000 lb ⓘ |
| nicknamed | Flying Forest NERFINISHED ⓘ |
| numberBuilt | 3 ⓘ |
| operator | Pan American Airways NERFINISHED ⓘ |
| passengerCapacity | 38 ⓘ |
| powerplant | Pratt & Whitney R‑1860 Hornet radial engines NERFINISHED ⓘ |
| primaryUser | Pan American Airways NERFINISHED ⓘ |
| range | ~900 mi ⓘ |
| retired | mid‑1940s ⓘ |
| role | oceanic flying boat airliner ⓘ |
| status | retired ⓘ |
| successor | Sikorsky S‑42 NERFINISHED ⓘ |
| tailConfiguration | conventional tail ⓘ |
| usedFor |
long‑range overwater routes
ⓘ
mail transport ⓘ passenger transport ⓘ |
| usedOnRoute |
Pan American Caribbean routes
NERFINISHED
ⓘ
Pan American Latin American routes NERFINISHED ⓘ |
| wingConfiguration | biplane ⓘ |
| wingspan | ~114 ft ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Sikorsky S‑40 Description of subject: The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Pratt & Whitney Wasp