Illustrative image; it may differ from the actual aircraft.

Boeing 737-300 (737-3H4)

B737-28330Ex-flota

RegistrationNG5N-MHM

Verified aircraft dataagainst the official civil aviation register

MAOperatorMax Air

2operators

2incidents

0accidents

12logbook years

0photos

Boeing 737-300 (737-3H4) built in 1997 in Renton. Operated for Southwest Airlines and Max Air.

NewNearly newYoungMatureAgingOld

Old · 29 years · ≈ 95,700 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 CFM56-3B1

PropulsionJet

Seats140 (C12 · Y128)

First flight1997

Built inRenton, Washington (EE. UU.)

Country of registrationEstados Unidos

OwnerSouthwest Airlines

MSN28330

Hex / ICAO 24-bit0641FE

VerificationIdentity verified against the official register of FAA (United States) under its former registration N645SW · Oct 8, 2026

The model · Boeing 737

Figures for the 737-800 variant, the most representative of the family

Length39.5 m129 ft

Wingspan35.8 m117 ft

Height12.6 m41 ft

Range5,436 km2,935 NMWith a typical passenger load

Cruise speed834 km/h450 ktMach 0.79

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

Maximum take-off weight79,016 kg174,200 lb

Maximum payload37,603 kg82,900 lbIts 162 passengers with baggage would weigh about 16.2 t; the rest is fuel and cargo

Typical capacity162 passengersUp to 189 in a high-density layout

Endurance6 h 31 minAt cruise speed, non-stop

With its 5,436 km range, from Dallas it could fly non-stop as far as:

LIMLima5,411 km BOGBogota3,917 km PTYTocumen3,194 km SEASeattle2,685 km JFKNew York2,222 km

Beyond its rangeLHRLondon7,620 km

The type first flew in 1967 (59 years ago) · About 10,200 units built · Production ended in 2019

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 Compare this aircraft

Seating layout

12Business

128Economy

140 seats in total

Airports

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

2018–2026Max Air airline base

Base

LOSLagos

Flight logbook

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

2017

Southwest Airlines · 1,402 flights during the year · base Dallas (DAL)

Main route of the year: Houston (HOU) → Dallas (DAL)

2016

Southwest Airlines · 1,857 flights during the year · base Baltimore (BWI)

Main route of the year: San Francisco (SFO) → San Diego (SAN)

33 days inactive

2015

Southwest Airlines · 2,209 flights during the year · base Baltimore (BWI)

Main route of the year: Dallas (DAL) → Houston (HOU)

2014

Southwest Airlines · 1,654 flights during the year · base Baltimore (BWI)

Main route of the year: Houston (HOU) → Dallas (DAL)

48 days inactive

2013

Southwest Airlines · 1,905 flights during the year · base Baltimore (BWI)

Main route of the year: Dallas (DAL) → Houston (HOU)

37 days inactive

2012

Southwest Airlines · 1,904 flights during the year · base Dallas (DAL)

Main route of the year: Dallas (DAL) → Houston (HOU)

32 days inactive

2011

Southwest Airlines · 2,317 flights during the year · base Dallas (DAL)

Main route of the year: Houston (HOU) → Dallas (DAL)

2010

Southwest Airlines · 2,194 flights during the year · base Phoenix (PHX)

Main route of the year: Houston (HOU) → Dallas (DAL)

No reliable logbook records exist for this aircraft before 2006.

Aircraft chronology

1997

Built

Assembled by Boeing in Renton, Washington (USA).

Mar 20, 1997

Delivered to The Boeing Company

Delivered to The Boeing Company as N645SW.

Jun 5, 1997

Transferred to Southwest Airlines

Transferred to Southwest Airlines.

Sep 11, 2001

Grounded after 9/11

On September 11, 2001, the 737 3H4/W aircraft (registration N645SW), operated by Southwest Airlines, was in the news. Source: the FAA (United States).

What happened

On 11 September 2001, after the attacks with hijacked aircraft on the Twin Towers in New York and the Pentagon, the FAA ordered — for the first time in history — the complete closure of United States airspace (the SCATANA plan): all civil aviation was told to land immediately, and by midday the American sky was clear. Around 240 international flights bound for the United States were diverted to Canada — Operation Yellow Ribbon, with more than 30,000 passengers. Airspace reopened gradually from 13 September, by then under new security measures. Source: the FAA (United States).

Source: FAA

Mar 14, 2013

Incident at Las Vegas

On March 14, 2013, the Boeing 737 3H4/W aircraft (registration N645SW), operated by Southwest Airlines, was involved in an incident at Las Vegas. Source: Southwest Airlines.

Source: Southwest Airlines

Nov 24, 2016

Incident at Burbank

On November 24, 2016, the Boeing 737 3H4/W aircraft (registration N645SW), operated by Southwest Airlines, was involved in an incident at Burbank. Source: the FAA (United States).

Source: FAA

Jun 24, 2018

Transferred to Max Air

Transferred to Max Air.

Operators

1997-03-20

The Boeing Company

Registration N645SW

1997-06-05

Southwest Airlines

Registration N645SW · Lessor: Southwest

2018-06-24

Max Air

Registration 5N-MHM

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This page was last updated on October 15, 2026

APA

Vuelopedia. (2026, October 15). Boeing 737-300 (737-3H4) · 5N-MHM · Max Air. Retrieved October 18, 2026, from https://vuelopedia.org/en/aircraft/B737-28330

MLA

“Boeing 737-300 (737-3H4) · 5N-MHM · Max Air.” Vuelopedia, Fundación Poderia, 15 Oct. 2026, vuelopedia.org/en/aircraft/B737-28330. Accessed 18 Oct. 2026.

Chicago

Vuelopedia. “Boeing 737-300 (737-3H4) · 5N-MHM · Max Air.” Fundación Poderia. Last modified October 15, 2026. https://vuelopedia.org/en/aircraft/B737-28330.

Harvard

Vuelopedia (2026) Boeing 737-300 (737-3H4) · 5N-MHM · Max Air. Available at: https://vuelopedia.org/en/aircraft/B737-28330 (Accessed: 18 October 2026).

BibTeX

@misc{vuelopedia_en_aircraft_b737_28330,
  author       = {{Vuelopedia}},
  title        = {{Boeing 737-300 (737-3H4) · 5N-MHM · Max Air}},
  publisher    = {Fundación Poderia},
  year         = {2026},
  date         = {2026-10-15},
  url          = {https://vuelopedia.org/en/aircraft/B737-28330},
  howpublished = {\url{https://vuelopedia.org/en/aircraft/B737-28330}},
  urldate      = {2026-10-18},
  note         = {Accessed 2026-10-18}
}

Wikipedia

{{cite web |url=https://vuelopedia.org/en/aircraft/B737-28330 |title=Boeing 737-300 (737-3H4) · 5N-MHM · Max Air |website=Vuelopedia |publisher=Fundación Poderia |date=2026-10-15 |access-date=2026-10-18 |language=en}}