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Martin 4-0-4

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From Wikipedia, the free encyclopedia
Martin 4-0-4

Nine Martin 404s of Southern Airways at Atlanta Airport in 1972, being prepared for departure on the morning wave of flights
Role Short/medium range airliner
Manufacturer Glenn L. Martin Company
First flight October 21, 1950 [1]
Introduction 1951
Primary users Eastern Air Lines
Trans World Airlines
Produced 1951-1953
Number built 103
Developed from Martin 2-0-2
The Martin 4-0-4 was an American pressurized passenger airliner built by the Glenn L. Martin Company. In addition to airline use initially in the United States, it was used by the United States Coast Guard and United States Navy as the RM-1G (later as the VC-3A).

Design and development
When production of the earlier Martin 2-0-2 was stopped due to problems with wing structural failure the company decided to re-wing an improved version (which had already flown as the Martin 3-0-3). The new aircraft was the Martin 4-0-4. It had structural changes to the wings, pressurization and was lengthened slightly to take 40 passengers. Like the earlier 2-0-2, the 4-0-4 was a cantilever monoplane with a standard tail unit (cantilever tailplane and single vertical stabilizer). It had an airstair in the lower tail section for passenger boarding and disembarkation, retractable tricycle landing gear and was powered by two Pratt & Whitney R-2800-CB16 radial piston engines.

Operational history

United States Coast Guard RM-1Z/VC-3A.
First deliveries in 1951 were made to Eastern Air Lines (EAL), which had ordered 60, and Trans World Airlines (TWA), which had ordered 40. The only other new aircraft from the production line were delivered to the United States Coast Guard which had ordered two as executive transports with the designation RM-1G later changed to RM-1 and then in 1962 to VC-3A. In 1969 they were transferred to the United States Navy and were withdrawn from use by 1970. A total of 103 aircraft were built at the Glenn L. Martin factory in Baltimore.

TWA operated its 40 4-0-4s under the name "Skyliner" on scheduled services between 1 September 1950 and the last flight on 29 April 1961.[2] EAL operated its 4-0-4s in the eastern USA using the class name "Silver Falcon". The first EAL schedule was flown on 5 January 1952 and retirement came in late 1962.[3]

Later in their airline career, as they became displaced from the EAL and TWA fleets by turbine-powered aircraft, the 4-0-4s became popular with "second level" operators, known as "local service air carriers" in the U.S. as described and regulated by the federal Civil Aeronautics Board (CAB), with these airlines needing to replace their Douglas DC-3s.[4] One of the last 'major' US airlines with a large fleet of piston-engined airliners was Southern Airways which operated 25 model 4-0-4s on a network of scheduled services from Atlanta in October 1961, all ex-Eastern Airlines aircraft.[5] Southern Airways' last 4-0-4 service was flown on 30 April 1978[6] with the air carrier then replacing them with smaller Fairchild Swearingen Metroliner "Metro II" turboprops. This was the last piston-engine airliner flight of all the mainstream USA carriers. Martin 4-0-4s were also flown by Pacific Air Lines (which subsequently merged with Bonanza Air Lines and West Coast Airlines to form Air West, which was then renamed Hughes Airwest), Piedmont Airlines (which operated former TWA 4-0-4 airliners), Ozark Air Lines and Mohawk Airlines during the 1960s. Most of these planes were replaced in 1968 with Fairchild F-27 and/or Fairchild-Hiller FH-227B turboprop aircraft.

Following their retirement by the aforementioned local service air carriers, a number of 4-0-4s were then operated by several U.S. based commuter and regional airlines including Air South, Atlantic Southeast Airlines (ASA), Florida Airlines, Marco Island Airways, Provincetown-Boston Airlines (PBA) and Southeast Airlines. Martin 4-0-4s were also used in Air Florida Commuter feeder service when Air Florida was operating domestic and international scheduled passenger jet service during the 1970s and 1980s.

In February 2008 the last airworthy 4-0-4, an ex TWA aircraft, was ferried to the Planes of Fame Museum in Valle, Arizona.[7]

Operators
♠ original operators

Civil

An Eastern Airlines Martin 404 circa 1955
Bolivia
Colombia
Aero Proveedora Proa Ltda
Dominican Republic
Dominair
Santiago Freighters
Haiti
Mexico
Panama
United States
Air South
Atlantic Southeast Airlines (1972–1979)
Eastern Airlines (1951–1962) ♠
Florida Airlines (1977–1981)
Marco Island Airways (1973–1981)
Mohawk Airlines (1961–1965)
Ozark Air Lines (1964–1967)
Pacific Air Lines (1959–1968)
Piedmont Airlines (1961–1972)
Provincetown-Boston Airlines (PBA) (1975–1984)
Southeast Airlines (1971–1976)
Southern Airways (1961–1978)

Trans World Airlines (TWA) (1950–1961) ♠
Venezuela
Rentavion

United States Coast Guard RM-1 in 1958.
Military
United States
United States Coast Guard ♠
United States Navy
Notable accidents and incidents
19 February 1955: TWA Flight 260 crashed into the Sandia Mountains; the three crew and 13 passengers died.[8]
1 April 1956: TWA Flight 400 crashed on takeoff from Greater Pittsburgh International Airport; 22 of the 36 people aboard the aircraft died.[9]
2 July 1963: Mohawk Airlines Flight 112 crashed during takeoff from Rochester-Monroe airport, seven people died and 36 were injured.[10]
30 May 1970: Lehigh Acres Development Inc. Flight 701 crashed near Atlanta, Georgia, one passenger and five people in a car died. Thirty other passengers were injured after just departing moments before from the DeKalb–Peachtree Airport.[11][12]
2 October 1970: In the Wichita State University Crash, a charter flight operated by Golden Eagle Aviation crashed near Silver Plume, Colorado; 31 of the 40 people on board died.[13]
Surviving aircraft
14119 – Fuselage in storage at Fantasy of Flight in Polk City, Florida. It was previously registered as N40415 and is in former Provincetown–Boston Airlines livery.[14]
14135 – Airworthy at the Planes of Fame Air Museum in Valle, Arizona. It is registered as N636X and is in a Pacific Air Lines livery.[15][16][17]
14141 – On static display at the Mid-Atlantic Air Museum in Reading, Pennsylvania. It was previously registered as N450A and is painted in an Eastern Air Lines livery.[18]
14142 – On static display at the National Airline History Museum in Kansas City, Missouri. It was previously registered as N145S.[19]
14143 – Cockpit on static display at the National Museum of Commercial Aviation in Forest Park, Georgia. It was previously registered as N9234C.[20][21]
14153 – On static display at the Pima Air & Space Museum in Tucson, Arizona. It was previously registered as N462M.[22]
14158 – Stored at Billings Logan International Airport in Billings, Montana. It was previously registered as N974M and is used for fire evacuation training.[23]
14227 – Owned by Harold Sheppard Jr. of Riverton, Wyoming. It is registered as N461M.[24]
14233 – On static display at the Glenn L. Martin Aviation Museum in Middle River, Maryland. It was previously registered as N259S, but is painted as N40400, the first 4-0-4 prototype.[25][26]
14246 – Stored at the Flying Tigers Airport near Paris, Texas. It was previously registered as N255S.[27]

Specifications
3-view silhouette drawing of the Martin RM-1
Data from Jane's All The World's Aircraft 1953–54[28]

General characteristics

Crew: 3 or 4
Capacity: 40 passengers
Length: 74 ft 7 in (22.73 m)
Wingspan: 93 ft 3 in (28.42 m)
Height: 28 ft 5 in (8.66 m)
Wing area: 864 sq ft (80.3 m2)
Airfoil: GLM-W 16
Empty weight: 29,126 lb (13,211 kg)
Max takeoff weight: 44,900 lb (20,366 kg)
Powerplant: 2 × Pratt & Whitney R-2800 Double Wasp-CB16 18-cylinder two-row air-cooled radial engine, 2,400 hp (1,800 kW) each (take off power), 1,800 hp (1,300 kW) (normal power)
Propellers: 3-bladed Hamilton Standard 2H17K3-48R, 13 ft 2 in (4.01 m) diameter
Performance

Maximum speed: 312 mph (502 km/h, 271 kn) at 14,500 ft (4,400 m)
Cruise speed: 280 mph (450 km/h, 240 kn) at 18,000 ft (5,500 m)
Stall speed: 81 mph (130 km/h, 70 kn) at sea level
Range: 1,080 mi (1,740 km, 940 nmi)
Ferry range: 2,600 mi (4,200 km, 2,300 nmi)
Service ceiling: 29,000 ft (8,800 m)
Rate of climb: 1,905 ft/min (9.68 m/s)
Take-off distance to 50 ft (15 m): 1,980 ft (600 m)
Landing distance from 50 ft (15 m): 1,750 ft (530 m)
See also
Related development

Martin 2-0-2
Aircraft of comparable role, configuration, and era

CASA C-207 Azor
Convair 240
Ilyushin Il-14
Saab 90 Scandia
Vickers VC.1 Viking
Related lists

List of military aircraft of the United States
List of United States Navy aircraft designations (pre-1962)
References
Notes
Gunston 1980, p. 170.
Killion 1997, pp. 148–149.
Killion 1997, pp. 133–134.
Killion 1997, p. 67.
Sievers 1969, p. 25.
Killion 1997. p. 147.
Airliner World, July 2008, p. 80
"Accident report for Martin 404 N40416 on February 19, 1955". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Accident report for Martin 404 N40403 on April 1, 1956". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Accident report for Martin 404 N449A on July 2, 1963". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Atlanta, GA Chartered Plane Crashes, May 1970 | GenDisasters ... Genealogy in Tragedy, Disasters, Fires, Floods". www.gendisasters.com. Retrieved 2019-02-23.
"AJC archival photos: 1970s Georgia plane crashes". myajc. Retrieved 2019-02-23.
"Accident report for Martin 404 N464M on October 2, 1970". Aviation Safety Network. Retrieved May 16, 2015.

"Accident report for Martin 404 N40416 on February 19, 1955". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Accident report for Martin 404 N40403 on April 1, 1956". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Accident report for Martin 404 N449A on July 2, 1963". Civil Aeronautics Board Accident Report. Archived from the original on March 4, 2016. Retrieved May 16, 2015.
"Atlanta, GA Chartered Plane Crashes, May 1970 | GenDisasters ... Genealogy in Tragedy, Disasters, Fires, Floods". www.gendisasters.com. Retrieved 2019-02-23.
"AJC archival photos: 1970s Georgia plane crashes". myajc. Retrieved 2019-02-23.
"Accident report for Martin 404 N464M on October 2, 1970". Aviation Safety Network. Retrieved May 16, 2015.
Henderson, David P. "PBA MARTIN 404 N40415 AT FANTASY OF FLIGHT". Sunshine Skies. David P. Henderson. Retrieved 1 April 2017.
"Flying & Static Aircraft". Planes of Fame. Archived from the original on 20 May 2017. Retrieved 1 April 2017.
"Airframe Dossier - Martin 4-0-4, c/n 14135, c/r N636X". Aerial Visuals. AerialVisuals.ca. Retrieved 1 April 2017.
"FAA REGISTRY [N636X]". Federal Aviation Administration. U.S. Department of Transportation. Retrieved 1 April 2017.
Rambow, Bill. "MARTIN 4-0-4 EASTERN AIRLINES "SILVER FALCON"". Mid-Atlantic Air Museum. Archived from the original on 11 December 2016. Retrieved 1 April 2017.
"Martin 404 N145S". Airline History Museum. Archived from the original on 2 April 2017. Retrieved 1 April 2017.
"EAL Martin 404 Cockpit". National Museum of Commercial Aviation. Archived from the original on 1 April 2017. Retrieved 1 April 2017.
"Airframe Dossier - Martin 4-0-4, c/n 14143, c/r N9234C". Aerial Visuals. AerialVisuals.ca. Retrieved 1 April 2017.
"Skyliner". Pima Air & Space Museum. Pimaair.org. Retrieved 1 April 2017.
"Airframe Dossier – Martin 4-0-4, c/n 14158, c/r N974M". Aerial Visuals. AerialVisuals.ca. Retrieved 1 April 2017.
"FAA Registry". Federal Aviation Administration. U.S. Department of Transportation. Retrieved 1 April 2017.
"Strawberry Point Flight Line". The Glenn L. Martin Maryland Aviation Museum. Retrieved 1 April 2017.
"Airframe Dossier - Martin 4-0-4, c/n 14233, c/r N259S". Aerial Visuals. AerialVisuals.ca. Retrieved 1 April 2017.
"Airframe Dossier - Martin4-0-4, c/n 14246, c/r N255S". Aerial Visuals. AerialVisuals.ca. Retrieved 1 April 2017.

Bridgman, Leonard. Jane's All The World's Aircraft 1953–54. London: Sampson Low, Marston & Co. Ltd, 1953.
Gunston, Bill. The Illustrated Encyclopedia of Propeller Airliners. Leicester, UK: Windward Imprint, 1980. ISBN 0-7112-0062-9.
The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). London: Orbis Publishing, 1985.
Killion, Gary L. The Martinliners. Sandpoint ID: Airways International Inc., 1997. ISBN 0-9653993-2-X.
Proctor, Jon (2019). "TWA's Skyliners: The Martin 2-0-2 and 4-0-4 in TWA Service". The Aviation Historian (29): 58–67. ISSN 2051-1930.
Sievers, Harry. North American Airline Fleets. Tunbridge Wells, Kent, UK: Air-Britain (Historians) Ltd., 1969. ISBN 0-85130-005-7.
Smith, M.J. Jr. Passenger Airliners of the United States, 1926–1991. Missoula, Montana: Pictorial Histories Publishing Company, 1986. ISBN 0-933126-72-7.
External links

Wikimedia Commons has media related to Martin 404.
Martin Airliners - Maryland Aviation Museum
Martin 202/404 Census - oldprops.ukhome.net (photos and history also on site)
Many detailed close-up photographs of a restored Martin 4-0-4 Archived 2011-07-06 at the Wayback Machine
Aviation Safety Network
Federal Aviation Authority Type Certificate for the Martin 404
vte
Martin and Martin Marietta aircraft
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USN/USMC transport designations pre–1962
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United States military transport aircraft designations, Army/Air Force and Tri-Service systems
Authority control databases Edit this at Wikidata
Categories: 1950s United States airlinersMartin aircraftLow-wing aircraftAircraft first flown in 1950Twin piston-engined tractor aircraft
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