Boeing 737 MAX — Safety Profile
Narrow-body · First flight: 29 January 2016 · EIS: 22 May 2017 (Malindo Air) · Updated 20 May 2026
The Boeing 737 MAX is the fourth generation of the 737 family (variants: MAX 7, MAX 8, MAX 9, MAX 10). The family was grounded worldwide for 20 months (March 2019 - November 2020) following two fatal accidents linked to the MCAS flight-control software. Ungrounding required software redesign, pilot training updates, and FAA recertification. On 5 January 2024, an in-flight door-plug separation on Alaska Airlines flight AS1282 (a MAX 9) led to a second FAA Emergency Airworthiness Directive and a continuing production-rate cap on Boeing. As of April 2026, Boeing has delivered 2,267 MAX aircraft with around 1,400+ in active service across 74 operators; 4,852 are on order.
Type overview
The 737 MAX is the re-engined fourth generation of the long-running 737 family. It uses CFM International LEAP-1B engines (replacing the CFM56-7B of the 737NG), with revised aerodynamics and an extended fuselage on the larger variants. The family comprises four variants:
- →MAX 7 — smallest variant; certification ongoing as of 2026
- →MAX 8 / MAX 8-200 — best-selling variant; in service since 2017 (high-density 8-200 with Ryanair)
- →MAX 9 — stretched variant; the type involved in AS1282
- →MAX 10 — longest variant; certification ongoing as of 2026
Safety record — notable events
A 737 MAX 8 crashed into the Java Sea 12 minutes after departure from Jakarta. All 189 occupants died. KNKT (Indonesia) final report identified erroneous angle-of-attack data triggering the Maneuvering Characteristics Augmentation System (MCAS) as a contributing factor, alongside design assumptions about flight-crew response.
A 737 MAX 8 crashed near Bishoftu, Ethiopia, six minutes after departure from Addis Ababa. All 157 occupants died. The Ethiopian Aircraft Accident Investigation Bureau (EAAIB) report cited MCAS activation following erroneous AOA data as a primary factor.
Following Ethiopian 302, regulators worldwide grounded the 737 MAX. The grounding lasted 20 months, the longest of any large commercial aircraft type.
The FAA rescinded the grounding order following MCAS software redesign, revised pilot training including simulator training for MCAS, and additional certification work. EASA followed in January 2021, Transport Canada in January 2021, CAAC (China) in December 2021.
A door plug separated from a 737 MAX 9 shortly after departure from Portland (PDX), causing rapid decompression at approximately 16,000 ft. The aircraft returned safely; no fatalities. All 171 passengers and 6 crew survived; 3 minor injuries reported. NTSB (case DCA24MA063) final report identified that four bolts retaining the door plug were not reinstalled during repair work at Boeing's Renton facility, and cited "multiple system failures" including production-quality issues and FAA oversight gaps.
FAA issued an Emergency Airworthiness Directive grounding 171 MAX 9 aircraft equipped with mid-cabin door plugs operated by US carriers or in US territory. EASA adopted an equivalent directive. Affected aircraft returned to service after enhanced inspections of door plug fasteners and components.
Major operators
As of 2026, the world's largest 737 MAX operators by fleet size:
| Operator | Region | Notable |
|---|---|---|
| Southwest Airlines | USA | Largest fleet (~262 aircraft, all MAX 8) |
| United Airlines | USA | MAX 8 and MAX 9 mix |
| Ryanair | Europe | MAX 8-200 high-density variant |
| American Airlines | USA | MAX 8 operator |
| Alaska Airlines | USA | 82 MAX (77 MAX 9 + 5 MAX 8); AS1282 aircraft |
| flydubai | UAE | All-MAX fleet |
| Air India | India | Post-Tata fleet expansion |
| TUI Group, Air Canada | Multi-region | European leisure and Canadian mainline |
Certification status and recent ADs
- →FAA production-rate cap: in place since the AS1282 event, the FAA limits Boeing 737 MAX production to 38 aircraft per month and conditions any increase on continued production-quality performance. Weekly FAA-Boeing review meetings continue.
- →Door-plug inspection AD (January 2024): mandates enhanced inspection of MAX 9 mid-cabin door plug fasteners. Adopted by EASA, Transport Canada, and other regulators.
- →MAX 7 and MAX 10 certification: ongoing as of 2026; both have been pending FAA type certification longer than originally scheduled, reflecting elevated post-2019 scrutiny.
- →NTSB recommendations: the NTSB DCA24MA063 final report issued safety recommendations to both Boeing and the FAA on manufacturing-quality systems and oversight.
- →Civil penalty: in September 2025, the FAA proposed a USD 3.14 million civil penalty against Boeing for production-oversight failures.
Recent 2024-2026 operational notes
Deliveries through 2024 and 2025 were constrained by the FAA production cap and ongoing quality-system rework at Boeing's Renton facility. Several customers — including airlines that had pre-AS1282 firm orders — restructured delivery schedules, in some cases substituting MAX 8 for delayed MAX 10 slots. The MAX continues to operate worldwide on short and medium-haul routes; ETOPS 180-min approval was reaffirmed post-recertification and is used by carriers such as Icelandair and Alaska Airlines for transcontinental and limited overwater segments.
Sources
- NTSB — Final report, case DCA24MA063 (Alaska Airlines flight 1282, 5 January 2024)
- FAA — Emergency Airworthiness Directive 2024-02-51 (737-9 door plug)
- FAA — Updates on Boeing 737-9 MAX aircraft and ongoing oversight
- EASA — Emergency AD adoption following the FAA directive
- KNKT (Indonesia) — Final report, Lion Air flight 610 (October 2018)
- EAAIB (Ethiopia) — Final report, Ethiopian Airlines flight 302 (March 2019)
- Boeing — 737 MAX programme updates and delivery statistics
- Aviation Week, Flight Global, Simple Flying — production-cap reporting 2024-2026