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Boeing 737 MAX 9 (737-9)

B737MAX-66119Active

RegistrationUSN37531

Verified aircraft dataagainst the official civil aviation register

OperatorUnited Airlines

1operators

1incidents

1accidents

4logbook years

0photos

Boeing 737 MAX 9 (737-9) built in 2022 in Renton. Operates for United Airlines.

NewNearly newYoungMatureAgingOld

New · 4 years · ≈ 14,000 flight hours (approx.)

Vuelopedia is a work in progress: it currently holds about 30% of the information we expect to have by the third quarter of 2027. Although we use only official, highly reliable sources, some aircraft data and history may still contain errors or inaccuracies. We work hard to clear every anomaly from the records using specialized verification tools.

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Technical data

ManufacturerBoeing

Engines2× 2 x CFMI LEAP-1B

PropulsionTurbofan

Seats166 (F16 · Y150)

First flight2022

Built inRenton, Washington (EE. UU.)

Country of registrationEstados Unidos

OwnerUnited

MSN66119

Hex / ICAO 24-bitA44939

VerificationIdentity verified against the official register of FAA (United States) · Oct 8, 2026

The model · Boeing 737 MAX

Figures for the 737 MAX 8 variant, the most representative of the family

Length39.5 m129 ft

Wingspan35.9 m118 ft

Height12.3 m40 ft

Range6,482 km3,500 NMWith a typical passenger load

Cruise speed839 km/h453 ktMach 0.79

Service ceiling12,500 m41,011 ftIt flies above Everest (1.4 times its height)

Maximum take-off weight82,645 kg182,201 lb

Maximum payload37,575 kg82,839 lbIts 178 passengers with baggage would weigh about 17.8 t; the rest is fuel and cargo

Typical capacity178 passengersUp to 189 in a high-density layout

Endurance7 h 44 minAt cruise speed, non-stop

With its 6,482 km range, from San Francisco it could fly non-stop as far as:

BOGBogota6,098 km PTYTocumen5,344 km MIAMiami4,154 km JFKNew York4,152 km HAVHavana4,129 km

Beyond its rangeLIMLima7,259 km

The type first flew in 2016 (10 years ago) · About 1,800 units built · Still in production

Figures for the type, not for this particular aircraft: each variant and each configuration changes something. They are shown in both systems used in aviation.

The full story of the Boeing 737 MAX Compare this aircraft

Seating layout

16First

150Economy

166 seats in total

Airports

Where this aircraft has operated, by period · source BTS (EE. UU.)

Flight logbook

Year-by-year activity · source BTS (EE. UU.)

2025

United Airlines · 851 flights during the year · base San Francisco (SFO)

Main route of the year: San Francisco (SFO) → Washington (IAD)

2024

United Airlines · 1,014 flights during the year · base Newark (EWR)

Main route of the year: Newark (EWR) → Denver (DEN)

2023

United Airlines · 1,050 flights during the year · base Denver (DEN)

Main route of the year: Los Angeles (LAX) → Houston (IAH)

2022

United Airlines · 586 flights during the year · base San Francisco (SFO)

Main route of the year: San Francisco (SFO) → Boston (BOS)

Aircraft chronology

2022

Built

Assembled by Boeing in Renton, Washington (USA).

Jun 28, 2022

Delivered to United Airlines

Delivered to United Airlines as N37531.

Sep 7, 2023

Accident at Hebron, Kentucky

On September 7, 2023, the Boeing 737-9 aircraft (registration N37531), operated by United Airlines, was involved in an accident at Hebron, Kentucky (United States), leaving 1 injured. Source: the NTSB (United States).

What happened

United Airlines flight 1759 met moderate turbulence while descending through 11,000 feet to land at Cincinnati/Northern Kentucky airport (CVG), and a flight attendant fractured her pelvis. On the SARGO-3 arrival, the pilots saw a single cloud with no apparent vertical development at around 11,000 feet; with no warnings from ATC, from their weather applications or from the on-board radar, they decided to continue. On entering the cloud they met about 2 seconds of moderate turbulence. The aft flight attendant was seated on her jumpseat, but without her harness fastened, when the sharp jolt threw her into the air: she struck the ceiling and fell sideways to the floor, fracturing her pelvis. The crew declared a medical emergency and requested paramedics at the gate. At the time there was no SIGMET, AIRMET or pilot report in force warning of significant turbulence. Source: the NTSB (United States).

Source: NTSB

Jan 6, 2024

Airworthiness directive

On January 6, 2024, the Boeing 737 MAX 9 aircraft (registration N37531), was subject to an airworthiness directive due to the absence of the four bolts securing the mid-cabin door plug, which departed the aircraft in flight (a manufacturing process failure). Source: la FAA.

Source: la FAA

Sep 14, 2024

Incident at Houston-George Bush Intercontinental (IAH) Airport

On September 14, 2024, the Boeing 737 MAX 9 aircraft (registration N37531), operated by United Airlines, was involved in an incident at Houston-George Bush Intercontinental (IAH) Airport (United States) due to a bird strike. Source: United Airlines.

Source: United Airlines

Operators

2022-06-28

United Airlines

Registration N37531

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This page was last updated on October 10, 2026

APA

Vuelopedia. (2026, October 10). Boeing 737 MAX 9 (737-9) · N37531 · United Airlines. Retrieved October 23, 2026, from https://vuelopedia.org/en/aircraft/B737MAX-66119

MLA

“Boeing 737 MAX 9 (737-9) · N37531 · United Airlines.” Vuelopedia, Fundación Poderia, 10 Oct. 2026, vuelopedia.org/en/aircraft/B737MAX-66119. Accessed 23 Oct. 2026.

Chicago

Vuelopedia. “Boeing 737 MAX 9 (737-9) · N37531 · United Airlines.” Fundación Poderia. Last modified October 10, 2026. https://vuelopedia.org/en/aircraft/B737MAX-66119.

Harvard

Vuelopedia (2026) Boeing 737 MAX 9 (737-9) · N37531 · United Airlines. Available at: https://vuelopedia.org/en/aircraft/B737MAX-66119 (Accessed: 23 October 2026).

BibTeX

@misc{vuelopedia_en_aircraft_b737max_66119,
  author       = {{Vuelopedia}},
  title        = {{Boeing 737 MAX 9 (737-9) · N37531 · United Airlines}},
  publisher    = {Fundación Poderia},
  year         = {2026},
  date         = {2026-10-10},
  url          = {https://vuelopedia.org/en/aircraft/B737MAX-66119},
  howpublished = {\url{https://vuelopedia.org/en/aircraft/B737MAX-66119}},
  urldate      = {2026-10-23},
  note         = {Accessed 2026-10-23}
}

Wikipedia

{{cite web |url=https://vuelopedia.org/en/aircraft/B737MAX-66119 |title=Boeing 737 MAX 9 (737-9) · N37531 · United Airlines |website=Vuelopedia |publisher=Fundación Poderia |date=2026-10-10 |access-date=2026-10-23 |language=en}}