Aircraft

Boeing 737 family

Last approved July 27, 2026Revision dbe716a2

Boeing 737 family

The Boeing 737 family is a series of twin-engine narrow-body airliners spanning four main generations. It serves short- and medium-haul networks, low-cost carriers and specialised government roles.[1]

Specifications

The principal family-level specifications are shown in the information panel. Values vary by variant, cabin, engine and operating rules; the linked manufacturer material is the controlling reference.

Development history

Boeing launched the original 737 as a smaller companion to the 727. The -100 first flew in 1967; the longer -200 established the programme commercially. The Classic, Next Generation and MAX families successively introduced larger cabins, new wings, digital flight decks and more efficient engines.[1]

Variants

The Original family comprises the -100 and -200; Classics are the -300/-400/-500; Next Generation models are the -600/-700/-800/-900; and the MAX line comprises the 737-7, -8, -9 and -10.

Current and former operators

Current operators include Southwest, Ryanair, United, American, Alaska Airlines, flydubai, Lion Air and many state and charter fleets. Former operators include British Airways, Britannia, US Airways and numerous carriers that retired early generations.

Engines

Original aircraft use low-bypass Pratt & Whitney JT8Ds, Classic and Next Generation aircraft use CFM56s, and the MAX uses CFM International LEAP-1B engines.

Orders and deliveries

Because the family remains in production, totals change monthly. Boeing's official orders-and-deliveries tables are the direct source for current orders, backlog and deliveries.[2]

Accidents and incidents

The family has experienced accidents across six decades. After two fatal 737 MAX 8 accidents, the FAA grounded the MAX, reviewed its flight-control changes and required design, training and maintenance actions before return to service in 2020.[3]

Compare with

Direct primary sources

Sources

  1. Select products in Boeing history. Boeing. Accessed 7/27/2026Cited 2 times
  2. Boeing orders and deliveries. Boeing. Accessed 7/27/2026
  3. Summary of the FAA's review of the Boeing 737 MAX. Federal Aviation Administration. Accessed 7/27/2026