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Boeing 737 MAX

The Boeing 737 MAX is a family of narrow-body, twin-engine jet airliners developed by Boeing Commercial Airplanes as the fourth generation of the Boeing 737.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

The Boeing 737 MAX is a family of narrow-body, twin-engine jet airliners developed by Boeing Commercial Airplanes as the fourth generation of the Boeing 737. It is the successor to the 737 Next Generation and features CFM International LEAP-1B engines, aerodynamic changes, and other structural modifications. The type entered service in 2017 and later underwent worldwide groundings after two fatal crashes linked to MCAS. In Canada, the aircraft has been operated by Canadian airlines and affected Canadian aviation regulation, fleet planning, and passenger service on domestic and transborder routes.

Development

Boeing launched the 737 MAX program in August 2011 as a successor to the 737 Next Generation. The aircraft incorporated larger CFM International LEAP-1B engines, aerodynamic improvements, and airframe changes to increase efficiency. The first flight occurred in January 2016.

Variants

The family includes the MAX 7, MAX 8, MAX 9, and MAX 10 variants. Typical seating and range vary by variant, with broad market use on short- and medium-haul routes. Boeing also produced a higher-density MAX 8-200 version for some operators.

Safety and groundings

The 737 MAX was grounded globally after two fatal accidents involving Lion Air Flight 610 in 2018 and Ethiopian Airlines Flight 302 in 2019. The accidents were linked to the Maneuvering Characteristics Augmentation System (MCAS). The type returned to service after software, training, and regulatory changes.

Current role

The 737 MAX remains Boeing’s main narrow-body commercial aircraft family and competes in the single-aisle market. It is used by airlines worldwide for domestic and short- to medium-haul international routes.

Key facts

  • The 737 MAX was announced in August 2011 and first flew in January 2016.
  • It is a re-engined and updated version of the Boeing 737 designed to improve efficiency and range.
  • The family includes the MAX 7, MAX 8, MAX 9, and MAX 10 variants.
  • Typical seating and range vary by variant, with broad market use on short- and medium-haul routes.
  • The aircraft was grounded worldwide after two fatal crashes in 2018 and 2019 and later returned to service after regulatory changes and redesigns.
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Canadian context

The 737 MAX is relevant to Canadian readers because it has been operated by Canadian airlines and affected Canadian aviation regulation, fleet planning, and passenger service on domestic and transborder routes.

Frequently asked questions

What is the Boeing 737 MAX?
It is Boeing’s fourth-generation 737 family of narrow-body, twin-engine passenger jets, developed as the successor to the 737 Next Generation.
When did the 737 MAX first fly?
The first flight took place in January 2016.
How many main variants are there?
The main variants are the MAX 7, MAX 8, MAX 9, and MAX 10.
Why was the 737 MAX grounded?
It was grounded worldwide after two fatal crashes in 2018 and 2019, which were linked to MCAS and led to major regulatory reviews.
When did the 737 MAX enter service?
It entered commercial service in 2017.
What engines does it use?
The aircraft uses CFM International LEAP-1B engines.

References

  1. Boeinghttps://www.boeing.com/commercial/737max
    Supports: Manufacturer description of the 737 MAX family
  2. Wikipediahttps://en.wikipedia.org/wiki/Boeing_737_MAX
    Supports: Program history, first flight, variants, engines, seating, and range
  3. Federal Aviation Administrationhttps://www.faa.gov/newsroom/faa-updates-boeing-737-max-0
    Supports: Temporary grounding of Boeing 737 MAX aircraft
  4. Federal Aviation Administrationhttps://www.faa.gov/newsroom/updates-boeing-737-9-max-aircraft
    Supports: 2024 grounding and inspection requirements for 737-9 MAX aircraft
  5. Wikipediahttps://www.wikipedia.org/wiki/Boeing_737_MAX_groundings
    Supports: Global grounding timeline and connection to MCAS