Hardware AtlasSupplier reference Explore in 3D

AVIATION / Propulsion & fuel / REVIEWED 2026-09-11

B02Fan & fan case

Accelerate air into the bypass duct and core.

Manufacturers & products

The fan, case and containment structure are engine-specific assemblies. Separate aerodynamic hardware from composite manufacturing partners and structural suppliers.

Program applicability is stated for each listing. 737NG, 737 MAX, and other aircraft examples are distinct configurations; listed products are not automatically interchangeable or approved for installation.

manufacturer

Safran Aircraft Engines

CFM fan modules

Safran’s CFM workshare includes the fan; LEAP uses resin-transfer-molded woven composite fan blades. [4][3]

Program / application

CFM engine program workshare; LEAP technology [4][3]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

LEAP composite construction must not be assigned to CFM56-7B blades.

View product & inquiry route

manufacturer

Albany Safran Composites

LEAP composite blades and cases

Joint venture manufacturing woven composite LEAP fan parts, including LEAP-1B blades at Querétaro. [5]

Program / application

LEAP / including 737MAX LEAP-1B [5]

Published manufacturing site: Rochester, USA; Commercy, France; Querétaro, Mexico

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

Joint venture supply-chain tier, not an independent alternate LEAP fan design.
Listed sites describe the production network, not an individual part’s provenance.

View product & inquiry route

manufacturer

GKN Aerospace

Fan cases, frames and rotating structures

Supplies fan structures and rotating engine components; published fan-static examples include Trent XWB and GEnx. [6]

Program / application

Named examples: Trent XWB / GEnx; exact 737 fan part unverified [6]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

CFM56 program participation does not establish that every listed fan product is a CFM56-7B part.

View product & inquiry route

manufacturer

NGPF Manufacturing Company Singapore

GTF fan blade manufacture

Pratt & Whitney–Hanwha venture manufacturing GTF fan blades and high-pressure turbine disks in Singapore. [7]

Program / application

GTF manufacturing; not a 737 engine [7]

Published manufacturing site: Singapore

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

Manufacturing partner; approved component selection remains with the engine program.

View product & inquiry route

What remains unverified

Public sources rarely disclose fan blade mass, detailed airfoil geometry or part-level containment data.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

Engine model and build standard
Match approved blade, disk, case and module identifiers before comparing technology.
Fan diameter and tip clearance · in / mm
Diameter affects flow capacity and installation, while clearance depends on the complete assembly.
Airfoil and acoustic design
Assess the fan with its inlet, operating map and acoustic treatment.
Materials and erosion protection
Compare metal or composite construction together with leading-edge protection and damage limits.
Containment structure · kg
Evaluate case weight and demonstrated containment at the approved engine conditions.
Bird and ice ingestion evidence
Compare the engine certification evidence, not an unsupported standalone blade claim.
Rotor life and balance · cycles
Cyclic loading, rotor records and allowable life constrain continued use.
Repair and inspection support
Compare approved repair paths, replacement availability and traceable configuration records.

Selection & integration notes

A fan manufacturer, its joint venture and the engine integrator may describe the same supply chain, not competing interchangeable parts.

Supporting references [4]

Published product examples

3 REFERENCES

Specifications belong to the named product and configuration.

CFM56-7B fanSafran Aircraft Engines

Diameter: 61 in[1]2004 manufacturer technology overview.
Blade count: 22[1]Solid titanium wide-chord blades in the cited design.

NG reference; unlike LEAP composite fan technology.

Example sources [1][4]

LEAP-1B fanSafran Aircraft Engines

Diameter: 69 in[2]Installed LEAP-1B engine fan; CFM published value.

737MAX example. Blade dimensions and mass are unpublished in the consulted pages.

Example sources [2][3]

GTF fan manufacturing referenceNGPF Manufacturing Company Singapore

RTX confirms GTF blade manufacture; the source does not establish a blade part number, dimensions or engine subvariant.

Example sources [7]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

CFM56-7 technology overview CFM International · Published 2004-07-18
Historical CFM56-7 thrust range, fan geometry and compressor stages.
Accessed 2026-09-10
LEAP engine family CFM International · Publication date not stated
LEAP-1B 737MAX application, takeoff thrust and fan diameter.
Accessed 2026-09-10
LEAP-1B Safran · Publication date not stated
LEAP-1B fan manufacturing technology.
Accessed 2026-09-10
GE Aerospace and Safran celebrate 50th anniversary GE Aerospace · Publication date not stated
CFM partner division of engine module work.
Accessed 2026-09-10
Albany Safran Composites facilities Albany International · Publication date not stated
LEAP composite parts and manufacturing locations.
Accessed 2026-09-10
Civil engines GKN Aerospace · Publication date not stated
Engine structural and rotating component capabilities and named program examples.
Accessed 2026-09-10
RTX in Singapore RTX · Publication date not stated
NGPF Manufacturing Company GTF fan blade and turbine disk manufacturing in Singapore.
Accessed 2026-09-10