Pratt & Whitney JT8D

E119288

low-bypass turbofan turbofan engine

The Pratt & Whitney JT8D is a low-bypass turbofan jet engine widely used on early short- to medium-range airliners and known for powering many classic narrow-body aircraft of the 1960s–1980s.

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All labels observed (15)

Label	Occurrences
Pratt & Whitney JT8D canonical	5
JT8D series	1
JT8D-1	1
JT8D-11	1
JT8D-15	1
JT8D-17	1
JT8D-209	1
JT8D-217	1
JT8D-219	1
JT8D-7	1
JT8D-9	1
Pratt & Whitney JT8D engines	1
Pratt & Whitney JT8D-17	1
Pratt & Whitney JT8D-200 series	1
license-built Pratt & Whitney JT8D	1

How this entity was disambiguated

This entity first appeared as the object of triple T1018440 — 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: Pratt & Whitney JT8D
Context triple: [Boeing 727, engineModel, Pratt & Whitney JT8D]

A. Pratt & Whitney JT9D
The Pratt & Whitney JT9D is a high-bypass turbofan jet engine that powered early wide-body airliners and was notably used on the original Boeing 747 series.
B. Rolls-Royce RB211
The Rolls-Royce RB211 is a high-bypass turbofan jet engine that was pioneering in its use of advanced materials and technology and became a cornerstone powerplant for wide-body airliners.
C. General Electric CF34-10E
The General Electric CF34-10E is a high-bypass turbofan engine developed by GE Aviation to power modern regional jets, particularly optimized for efficiency, reliability, and low emissions.
D. General Electric F404
The General Electric F404 is a family of afterburning turbofan jet engines widely used in modern fighter aircraft for their reliability, high thrust-to-weight ratio, and ease of maintenance.
E. Pratt & Whitney F117-PW-100
The Pratt & Whitney F117-PW-100 is a high-bypass turbofan jet engine used to power the Boeing C-17 Globemaster III military transport aircraft.
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: Pratt & Whitney JT8D
Target entity description: The Pratt & Whitney JT8D is a low-bypass turbofan jet engine widely used on early short- to medium-range airliners and known for powering many classic narrow-body aircraft of the 1960s–1980s.

A. Pratt & Whitney JT9D
The Pratt & Whitney JT9D is a high-bypass turbofan jet engine that powered early wide-body airliners and was notably used on the original Boeing 747 series.
B. Rolls-Royce RB211
The Rolls-Royce RB211 is a high-bypass turbofan jet engine that was pioneering in its use of advanced materials and technology and became a cornerstone powerplant for wide-body airliners.
C. General Electric CF34-10E
The General Electric CF34-10E is a high-bypass turbofan engine developed by GE Aviation to power modern regional jets, particularly optimized for efficiency, reliability, and low emissions.
D. General Electric F404
The General Electric F404 is a family of afterburning turbofan jet engines widely used in modern fighter aircraft for their reliability, high thrust-to-weight ratio, and ease of maintenance.
E. Pratt & Whitney F117-PW-100
The Pratt & Whitney F117-PW-100 is a high-bypass turbofan jet engine used to power the Boeing C-17 Globemaster III military transport aircraft.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	low-bypass turbofan ⓘ turbofan engine ⓘ
application	BAC One-Eleven (re-engined variants) ⓘ Boeing 727 ⓘ Boeing 737-100 ⓘ linked to: Boeing 737 Boeing 737-200 ⓘ linked to: Boeing 737 Hawker Siddeley Trident 1E ⓘ linked to: Hawker Siddeley Trident McDonnell Douglas DC-9 ⓘ McDonnell Douglas MD-80 series ⓘ linked to: McDonnell Douglas MD-80
bypassRatio	low bypass ⓘ
compressorType	axial-flow ⓘ
configuration	two-spool ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
designGoal	improved fuel efficiency over turbojets of its era ⓘ
enteredService	mid-1960s ⓘ
familyMember	JT8D-1 ⓘ linked to: Pratt & Whitney JT8D JT8D-11 ⓘ linked to: Pratt & Whitney JT8D JT8D-15 ⓘ linked to: Pratt & Whitney JT8D JT8D-17 ⓘ linked to: Pratt & Whitney JT8D JT8D-209 ⓘ linked to: Pratt & Whitney JT8D JT8D-217 ⓘ linked to: Pratt & Whitney JT8D JT8D-219 ⓘ linked to: Pratt & Whitney JT8D JT8D-7 ⓘ linked to: Pratt & Whitney JT8D JT8D-9 ⓘ linked to: Pratt & Whitney JT8D
firstRun	1963 ⓘ
fuelType	Jet-A kerosene ⓘ
manufacturer	Pratt & Whitney ⓘ
marketRole	workhorse engine for early jet airliners ⓘ
natoDesignation	F401 (military derivative context) ⓘ
notableFeature	distinctive high noise levels by modern standards ⓘ rear-fuselage mounting on many aircraft ⓘ
notableFor	widespread use in 1960s–1980s narrow-body jets ⓘ
notableOperator	American Airlines (historical) ⓘ linked to: American Airlines Delta Air Lines (historical) ⓘ linked to: Delta Air Lines SAS Scandinavian Airlines (historical) ⓘ linked to: Scandinavian Airlines
regulatoryContext	subject to Stage 3 and Stage 4 noise compliance via hushkits or re-engining ⓘ
relatedEngine	Pratt & Whitney JT3D ⓘ Pratt & Whitney JT9D ⓘ
servicePeriod	1960s–present (limited service) ⓘ
status	out of production ⓘ
successor	CFM International CFM56 ⓘ Pratt & Whitney JT10D (cancelled successor project) ⓘ Pratt & Whitney PW2000 ⓘ
thrustRange	14000–17000 lbf ⓘ
usedFor	narrow-body jetliners ⓘ short- to medium-range airliners ⓘ
usedOn	business jet and special-mission derivatives of DC-9/MD-80 ⓘ cargo-converted narrow-body aircraft ⓘ

How these facts were elicited

Referenced by (19)

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

Boeing 727 → engineModel → Pratt & Whitney JT8D ⓘ

McDonnell Douglas YC-15 → engineModel → Pratt & Whitney JT8D-17 ⓘ

subject linked to: YC-15