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Martin 4-0-4 · N251S · Southern Airways

Martin 4-0-4 illustration in Southern Airways livery Illustrative image; it may differ from the actual aircraft.

Martin 4-0-4

M404-14243Written off
RegistrationUSN251S
OperatorSouthern Airways
2operators
0incidents
0accidents
0logbook years
0photos

Martin 4-0-4. Operated for Eastern Air Lines and Southern Airways.

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.

Technical data

ManufacturerMartin
Country of registrationEstados Unidos
MSN14243
VerificationPending check against the official civil register

The model · Martin 4-0-4

Figures for the 4-0-4 variant, the most representative of the family

Length22.7 m75 ft
Wingspan28.4 m93 ft
Height8.7 m28 ft
Range1,738 km938 NMWith a typical passenger load
Cruise speed451 km/h244 ktMach 0.42
Service ceiling8,839 m28,999 ft
Maximum take-off weight20,366 kg44,899 lb
Maximum payload7,155 kg15,774 lbIts 40 passengers with baggage would weigh about 4.0 t; the rest is fuel and cargo
Typical capacity40 passengers
Endurance3 h 51 minAt cruise speed, non-stop

The type first flew in 1950 (76 years ago) · About 103 units built · Production ended in 1953

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 Martin 4-0-4 Compare this aircraft

Flight logbook

Under research

Aircraft chronology

Dec 1, 1952
Delivered to Eastern Air Lines
Delivered to Eastern Air Lines as N495A.
Dec 1, 1962
Transferred to Southern Airways
Transferred to Southern Airways.

Operators

1952-12-01
Eastern Air Lines
Registration N495A
1962-12-01
Southern Airways
Registration N251S

In memoriam

This aircraft suffered a serious accident or hull loss. Out of respect for what happened and for the people who may have been affected, this record does not enable the register of memories.

Cite

To cite this page in academic work, an article or Wikipedia, choose the style and copy the reference. The access date is today.

This page was last updated on October 10, 2026

APA

Vuelopedia. (2026, October 10). Martin 4-0-4 · N251S · Southern Airways. Retrieved October 16, 2026, from https://vuelopedia.org/en/aircraft/M404-14243

MLA

“Martin 4-0-4 · N251S · Southern Airways.” Vuelopedia, Fundación Poderia, 10 Oct. 2026, vuelopedia.org/en/aircraft/M404-14243. Accessed 16 Oct. 2026.

Chicago

Vuelopedia. “Martin 4-0-4 · N251S · Southern Airways.” Fundación Poderia. Last modified October 10, 2026. https://vuelopedia.org/en/aircraft/M404-14243.

Harvard

Vuelopedia (2026) Martin 4-0-4 · N251S · Southern Airways. Available at: https://vuelopedia.org/en/aircraft/M404-14243 (Accessed: 16 October 2026).

BibTeX

@misc{vuelopedia_en_aircraft_m404_14243,
  author       = {{Vuelopedia}},
  title        = {{Martin 4-0-4 · N251S · Southern Airways}},
  publisher    = {Fundación Poderia},
  year         = {2026},
  date         = {2026-10-10},
  url          = {https://vuelopedia.org/en/aircraft/M404-14243},
  howpublished = {\url{https://vuelopedia.org/en/aircraft/M404-14243}},
  urldate      = {2026-10-16},
  note         = {Accessed 2026-10-16}
}

Wikipedia

{{cite web |url=https://vuelopedia.org/en/aircraft/M404-14243 |title=Martin 4-0-4 · N251S · Southern Airways |website=Vuelopedia |publisher=Fundación Poderia |date=2026-10-10 |access-date=2026-10-16 |language=en}}