C-74 Globemaster
Encyclopedia
The Douglas C-74 Globemaster was a United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
heavy-lift cargo aircraft
Cargo aircraft
A cargo aircraft is a fixed-wing aircraft designed or converted for the carriage of goods, rather than passengers. They are usually devoid of passenger amenities, and generally feature one or more large doors for the loading and unloading of cargo...
built by the Douglas Aircraft Company
Douglas Aircraft Company
The Douglas Aircraft Company was an American aerospace manufacturer, based in Long Beach, California. It was founded in 1921 by Donald Wills Douglas, Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas...
in Long Beach, California
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
.
The Globemaster was developed after the Japanese attack on Pearl Harbor
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...
. The long distances across the Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
, and especially the Pacific Ocean to the combat areas indicated a need for a transoceanic heavy-lift military transport aircraft. Douglas Aircraft Company
Douglas Aircraft Company
The Douglas Aircraft Company was an American aerospace manufacturer, based in Long Beach, California. It was founded in 1921 by Donald Wills Douglas, Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas...
responded in 1942 with a giant four-engined design. Development and production modifications issues with the aircraft caused the first flight to be delayed until 5 September 1945, and production was limited to 14 aircraft after the production contract was canceled after V-J Day.
Although not produced in large numbers, the C-74 did fill the need for a long-range strategic airlifter, in which the subsequent Douglas C-124 Globemaster II
C-124 Globemaster II
The Douglas C-124 Globemaster II, nicknamed "Old Shakey", was a heavy-lift cargo aircraft built by the Douglas Aircraft Company in Long Beach, California....
was used by the Air Force for many years.
Design and development
A contract worth more than $50 million was signed 25 June 1942, for 50 aircraft and one static test article. There were no XC- or YC-74 models produced.The Douglas Aircraft Company began studies at their Santa Monica division towards developing a transport capable of fulfilling the needs of the U.S. military. The 'C-74 Project Group' used their company's DC-4 as a basis and concentrated on extending its capabilities. This new model number aircraft became the Douglas Model 415. Their design philosophy was to build a "no-frills" aircraft that was able to accommodate much of the Army's large equipment. This included tanks, 105 mm Howitzers with transporting vehicles, angle bulldozers, and smaller utility vehicles like jeeps.
This first flight of a C-74 occurred on 5 September 1945. The first C-74, 42-65402, was airborne just two months after it rolled off the assembly line. At the time of its first flight, the C-74 was the largest landplane to enter production, with a maximum weight of 172,000 lb (78,000 kg). It was able to carry 125 soldiers or 48,150 lb (21,840 kg) of cargo over a range of 3,400 mi (5,500 km). Perhaps the most notable feature of the C-74 was its cockpit arrangement with separate canopies over the pilot and copilot; the same arrangement was used for the Northrop XB-42 Mixmaster. This arrangement was unpopular with flight crews, however, and the aircraft were retrofitted with a more conventional arrangement. During the life of the aircraft, the radial engine
Radial engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel...
s were also upgraded to 3,250 hp (2,424 kW) Pratt & Whitney R-4360-49 engines. The aircraft was 31 feet longer than the C-54 Skymaster
C-54 Skymaster
The Douglas C-54 Skymaster was a four-engined transport aircraft used by the United States Army Air Forces and British forces in World War II and the Korean War. Besides transport of cargo, it also carried presidents, British heads of government, and military staff...
, and would be 24 feet longer than the proposed C-118 Liftmaster.
The second built, 42-65403, c/n 13914, crashed during flight testing on 5 August 1946 at Torrance, California
Torrance, California
Torrance is a city incorporated in 1921 and located in the South Bay region of Los Angeles County, California, United States. Torrance has of shore-front beaches on the Pacific Ocean, quieter and less well-known by tourists than others on the Santa Monica Bay, such as those of neighboring...
when it lost a wing during an overload dive test. All four crew bailed out successfully.. The fourth aircraft was diverted to a static test article at Wright Field, Ohio and virtually every component was tested to destruction between August 1946 and November 1948. This was done in order to determine the individual components' ability to withstand design loads. The fifth C-74 built was modified to be a prototype for the Douglas C-124 Globemaster II, which used the same wing as the C-74, but used a much larger fuselage. This newer aircraft quickly superseded the C-74 in service.
Douglas had every intention to adapt the aircraft into a civil airliner once the war ended. Pan American World Airways
Pan American World Airways
Pan American World Airways, commonly known as Pan Am, was the principal and largest international air carrier in the United States from 1927 until its collapse on December 4, 1991...
began negotiations in 1944. Their civilian model would be dubbed a DC-7 by Douglas (Model 415A) and the 'Clipper Type 9' by Pan American. Pan American intended to use the 108-passenger aircraft for international travel between New York, Rio de Janeiro, and other cities. The major difference between the military cargo aircraft and the civil airliner was the non-pressurized fuselage of the military C-74 and the pressurized DC-7. The passenger compartment was to be outfitted with a lounge bar, dining area and sleeping cabins for night flights. In June 1945, an order was placed for 26 DC-7 aircraft.
With the need for military aircraft greatly reduced by the end of World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
, the order for 50 military aircraft was canceled in January 1946 after production of only 14 aircraft. Only construction numbers 13913/133926 (AAF serials 42-65402/65415) were built. Construction numbers 13927/13962 (AAF serials 42-65416/65451) were canceled. This cancellation also ended plans to build an airliner version of the C-74 for the civilian market, as the limited military production run increased the cost per civilian aircraft to over $1,412,000 and Pan American canceled its order. Douglas then canceled the DC-7 designation. The DC-7
Douglas DC-7
The Douglas DC-7 is an American transport aircraft built by the Douglas Aircraft Company from 1953 to 1958. It was the last major piston engine powered transport made by Douglas, coming just a few years before the advent of jet aircraft such as the Boeing 707 and Douglas DC-8.-Design and...
designation was later used for a completely different civilian airliner project in the early 1950s, having no relationship to the C-74.
Operational history
Air Transport Command
Air Transport Command is an inactive United States Air Force unit. Its mission was to meet the urgent demand for the speedy reinforcement of the United States' military bases worldwide during World War II, using an air supply system to supplement surface transport...
(ATC), and later to the United States Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...
Military Air Transport Service
Military Air Transport Service
The Military Air Transport Service is an inactive Department of Defense Unified Command. Activated on 1 June 1948, MATS was a consolidation of the United States Navy Naval Air Transport Service and the United States Air Force Air Transport Command into a single, joint, unified command...
(MATS).
The C-74 had a crew of five, including copilot, pilot, radio operator, navigator, and flight engineer. Crew rest quarters were included for long-duration missions. Passageways were provided in the wing to permit the flight engineer to perform servicing and repairs while in flight. It could carry 125 fully equipped troops, 115 litter patients with their medical attendants, or up to 50,000 pounds (22,000 kilograms) of cargo. The cargo bay had twin hoists that could be moved on a rail up and down the bay. They could be used to drop a removable belly section to ease loading of cargoes, reducing the need for specialized cargo handling equipment.
The small numbers of C-74s built meant that the aircraft's service was limited, but it gave the Air Force experience with the operation and usefulness of large transport aircraft.
Service introduction
The "C-74 squadron" was activated along with the "C-74 Project" on 5 September 1946. They were attached to the 554th AAF Base Unit located at Memphis Municipal AirportMemphis Municipal Airport
Memphis Municipal Airport is a city-owned public use airport located one nautical mile northeast of the central business district of Memphis, a city in Hall County, Texas, United States.- Facilities and aircraft :...
, Tennessee. The 554th was a part of the USAAF Air Transport Command
Air Transport Command
Air Transport Command is an inactive United States Air Force unit. Its mission was to meet the urgent demand for the speedy reinforcement of the United States' military bases worldwide during World War II, using an air supply system to supplement surface transport...
. The C-74 Squadron's mission was:
- To conduct non-scheduled, nonstop flights from Fairfield-Suisun (Later Travis Air Force Base) to Washington, D.C. The flights would be cargo only, no passengers were authorized.
- To establish a flight program which would accumulate 300 hours of service time on the Globemaster's original R-4360-27 engines in the shortest possible time
- To gather and record all technical data from tests performed on the C-74
- To train sufficient crew members and aircraft mechanics with which to conduct these tests. The R-4360 engine was earmarked for the B-35 and B-36 so Air Materiel Command was especially anxious to see the results of the squadron's use of the aircraft.
- Establish loading techniques and procedures
- Establish proper tie-down procedures.
- Establish air evacuation techniques.
- Determine other data concerning loading, offloading of cargo.
This project was designed to be a "shakedown" of the aircraft prior to entering operational service. Training of personnel to conduct this test was to have been accomplished by aircrews and technicians initially C-74 trained at Wright Field, Ohio, and also at the Douglas facility in Long Beach
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
, California. Approximately 30 transcontinental flights were planned.
The squadron was moved to Morrison Field, Florida in October 1946. This was due to the fact that the runways at Memphis were not stressed to take the large gross weight of the C-74, resulting in some minor cracking to the concrete surface. Operations included two weekly trips from Morrison Field to Albrook Field, Panama using Río Hato Army Air Base as an alternate field.
In 1947, the 2nd and 3rd Air Transport Groups (Provisional) were formed and the C-74 was declared operationally ready. Humanitarian missions were flown in 1947 that included flood relief to Florida, and Hurricane relief for the southern area of the U.S.
MATS operations
Morrision Field was inactivated on 1 July 1947, and both provisional units were inactivated, the aircraft and support personnel and equipment being reassigned to Brookley Field, Alabama. On 1 June 1948, the Military Air Transport ServiceMilitary Air Transport Service
The Military Air Transport Service is an inactive Department of Defense Unified Command. Activated on 1 June 1948, MATS was a consolidation of the United States Navy Naval Air Transport Service and the United States Air Force Air Transport Command into a single, joint, unified command...
(MATS) was formed with the merging of the Air Force's Air Transport Command and the Navy's Naval Air Transport Service. Within MATS, all of the Globemasters were assigned to the Atlantic Division.
Once in operational use, C-74s began to be used on scheduled MATS overseas routes though the late 1940s and mid 1950s:
- "Panamanian", between Brookley and Albrook AFB, Panama
- "Puerto Rican", between Brookley and Ramey AFB, Puerto Rico
- "Hawaiian", between Brookley and Hickam AFB, Hawaii, with a stop at Fairfield-Suisun (later Travis) AFB, California.
- "Johnathan", between Brookley, Kelly AFB, Texas; McClellan AFB, CaliforniaCaliforniaCalifornia is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
; McChord AFB, Washington, and Elmendorf AFB, Alaska. - Brookley and Casablanca-Anfa AirportCasablanca-Anfa AirportCasablanca-Anfa Airport is an airport in Morocco , located about southwest of Casablanca. Anfa Airport is one of two airports serving the Casablanca area, the other being the newer and larger Mohammed V International Airport. Anfa Airport, restricted by the urban growth around it, primarily serves...
, French MoroccoFrench MoroccoFrench Protectorate of Morocco was a French protectorate in Morocco, established by the Treaty of Fez. French Morocco did not include the north of the country, which was a Spanish protectorate...
; Wheelus Air BaseWheelus Air Base-See also:*List of airports in Libya-External links:*****...
, Libya - Brookley and Keflavik Airport, Iceland; RAF ManstonRAF ManstonRAF Manston was an RAF station in the north-east of Kent, at on the Isle of Thanet from 1916 until 1996. The site is now split between a commercial airport Kent International Airport and a continuing military use by the Defence Fire Training and Development Centre , following on from a long...
, England.
Additionally, logistic support flights for Strategic Air Command
Strategic Air Command
The Strategic Air Command was both a Major Command of the United States Air Force and a "specified command" of the United States Department of Defense. SAC was the operational establishment in charge of America's land-based strategic bomber aircraft and land-based intercontinental ballistic...
(SAC), and Tactical Air Command
Tactical Air Command
Tactical Air Command is an inactive United States Air Force organization. It was a Major Command of the United States Air Force, established on 21 March 1946 being headquartered at Langley Air Force Base, Virginia...
(TAC) saw the Globemaster in North Africa, the Middle East, Europe, the Caribbean, and within the United States. Two C-74s were used to support the first TAC Republic F-84 Thunderjet flight across the Pacific Ocean to Japan. SAC also continued to use the Globemasters to rotate Boeing B-47 Stratojet Medium Bombardment Groups on temporary duty in England and Morocco as part of their REFLEX operation.
Berlin Airlift
During the Berlin Airlift, a single Globemaster (42-65414) arrived at Rhein-Main Air BaseRhein-Main Air Base
Rhein-Main Air Base was a U.S. Air Force / NATO military airbase near the city of Frankfurt am Main, Germany. It occupied the south side of Frankfurt International Airport. Its airport codes are discontinued....
on 14 August 1948 and landed for the first time on 17 August at Berlin's Gatow Airfield in the British sector carrying 20 tons of flour. Over the next six weeks, the Globemaster crew flew 24 missions into the city delivering 1,234,000 pounds of supplies. Several airlift records were set by the crew in 414 during Operation Vittles. On 18 September, Air Force Day, the crew flew six round trips into Berlin hauling a total of 250,000 pounds of coal setting a new Airlift Task Force utilization record by flying 20 hours during the 24 hour effort.
During the construction of Tegel Airfield in the French sector of Berlin, large construction equipment was needed to build new runways. But this equipment, including a rock crusher, was too big for even the Globemaster to accommodate. The mission was accomplished by having the equipment cut into pieces by welding torch at Rhein-Main and flown aboard the C-74 into Gatow for reassembly.
After six weeks of Vittles flights, the Globemaster returned to Brookley AFB. Reportedly, the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
complained that the Globemaster could be used as a bomber via the open elevator well. The fact that the runways in Berlin were not stressed for the airlifter's weight and the aircraft was not compatible with the corridor's scheduling were other factors considered for its withdrawal.
Support for the Berlin Airlift by the C-74 changed to flying regularly scheduled flights between the U.S. and Western Germany. This mission was called the 'Goliath' and was constantly transporting C-54 engines and parts for use in the airlift. Cargo arriving in Western Germany was flown to Berlin in smaller C-47 Skytrain and C-54 Skymaster aircraft.
Experience with the Berlin Airlift demonstrated that the new United States Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...
needed a heavy strategic airlift capability, which led to the development of the Douglas C-124 Globemaster II
C-124 Globemaster II
The Douglas C-124 Globemaster II, nicknamed "Old Shakey", was a heavy-lift cargo aircraft built by the Douglas Aircraft Company in Long Beach, California....
.
Korean War
The invasion of the Republic of Korea by North KoreaNorth Korea
The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...
began another supporting phase of the C-74's career. From 1 July 1 to December 1950, the Globemasters logged over 7,000 hours in flights to Hawaii hauling troops and high priority cargo westward toward the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...
and returning eastward with wounded GIs.
During the seven months between July 1950 and January 1951, the Globemasters transported 2,486 patients, 550 passengers, and 128,000 pounds of cargo from Hickam AFB, Hawaii to the United States while hauling just under a million pounds of cargo westward. The C-74s did not fly into Japan, Okinawa or any South Korean airfields. These figures, coupled with the fact that, since 1946, the C-74 had flown over six million miles and 31,000 flying hours without a single injury to crewmen or passengers, give testimony to the Globemaster's reliability.
Retirement
By 1952, The C-74 began to experience shortages of spare parts and increasing maintenance problems. It was recognized by late 1954, that the deterioration of the C-74's components were progressing more rapidly than predicted. Plans were made for the eventual retirement of the Air Force's only fleet of Globemasters. In June 1955, the 6th ATS was merged with the 3rd ATS and was flying operational missions with them. On 1 July, the 6th ATS (Heavy) was officially deactivated and its C-74s and crews were transferred to the 1703rd ATG's 3rd ATS (Heavy). On 1 November 1952, the C-74s were placed in flyable storage at Brookley AFB while the group waited for instructions as to the disposition of the aircraft.During the first three months of 1956, the 11 remaining C-74s were officially removed from the Military Air Transport Service's inventory and were flown one by one to Davis-Monthan AFB, Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
for long-term storage and disposition. Colonel George S. Cassady, who had accepted the first C-74 for the Air Force and now a Brigadier General
Brigadier general (United States)
A brigadier general in the United States Army, Air Force, and Marine Corps, is a one-star general officer, with the pay grade of O-7. Brigadier general ranks above a colonel and below major general. Brigadier general is equivalent to the rank of rear admiral in the other uniformed...
, was attending a Continental Division Commander's Conference when he learned of the C-74's last flight. Cassady received special permission to pilot the aircraft on its last flight and on 31 March 31 1956, flew the last C-74 from Brookley AFB to Davis-Monthan AFB.
Most of the C-74s in storage at Davis-Monthan AFB were scrapped in 1965, although four wound up in civilian hands, mostly owned by Aeronaves de Panama (holding company for "Air Systems"). The National Museum of the United States Air Force
National Museum of the United States Air Force
The National Museum of the United States Air Force is the official museum of the United States Air Force located at Wright-Patterson Air Force Base northeast of Dayton, Ohio. The NMUSAF is the world's largest and oldest military aviation museum with more than 360 aircraft and missiles on display...
scrapped the last vestige of Air Force Globemaster Is when they relegated the YC-124C, 48-795 (the prototype of the Globemaster II which had been converted from C-74, 42-65406) to fire-fighting training in 1969.
- 42-65404 was sold on the civilian market as N3182G. It wound up in Panama as Aeronaves de Panama HP-385. It flew in Europe and to Middle East frequently but crashed near Marseilles, France on 9 October 1963, with six on board killed. After the crash, Aeronaves de Panamas licence to operate from Denmark was withdrawn, and the airline went out of business.
- 42-65408 was sold on the civilian market on 24 March 1959 as N8199H, owned by Akros Dynamic. It was flown to Cuba in an attempt to sell it to the new Castro government. It later was moved to Panama as Aeronaves de Panama HP-367. It flew in Europe and to Middle East frequently. Abandoned after the airline went out of business in 1963, and dismantled at Milan, Italy in August 1972; it was the last surviving Globemaster.
- 42-65409 was sold on the civilian market in 1956 as N3181G. After reconditioning at Oakland, CaliforniaOakland, CaliforniaOakland is a major West Coast port city on San Francisco Bay in the U.S. state of California. It is the eighth-largest city in the state with a 2010 population of 390,724...
, it wound up in Panama as Aeronaves de Panama HP-379. It flew in Europe and to Middle East frequently carrying live cattle from Copenhagen to the Middle East. It was abandoned at Milan, Italy in 1969 and appeared in the 1969 Michael CaineMichael CaineSir Michael Caine, CBE is an English actor. He won Academy Awards for best supporting actor in both Hannah and Her Sisters and The Cider House Rules ....
movie "The Italian JobThe Italian JobThe Italian Job is a 1969 British caper film, written by Troy Kennedy Martin, produced by Michael Deeley and directed by Peter Collinson. Subsequent television showings and releases on video have established it as an institution in the United Kingdom....
." It was painted in the colors of the fictitious Communist Chinese Civil Aviation Airlines that delivered the gold to FIATFiatFIAT, an acronym for Fabbrica Italiana Automobili Torino , is an Italian automobile manufacturer, engine manufacturer, financial, and industrial group based in Turin in the Italian region of Piedmont. Fiat was founded in 1899 by a group of investors including Giovanni Agnelli...
in Turin. Later moved to Turin airport, it caught fire while on public display on 11 June 1970 and again on 24 September 1970 while it was being salvaged, this time killing two salvage workers.
- 42-65412 was sold on the civilian market in 1956 as N3183G. Dismantled at Long Beach,CA in 1964
Units assigned
The following USAAF/USAF units flew the C-74 Globemaster:- Air Transport CommandAir Transport CommandAir Transport Command is an inactive United States Air Force unit. Its mission was to meet the urgent demand for the speedy reinforcement of the United States' military bases worldwide during World War II, using an air supply system to supplement surface transport...
, Continental Division
- C-74 Squadron, 554th Army Air Field Base Unit, Memphis Municipal AirportMemphis Municipal AirportMemphis Municipal Airport is a city-owned public use airport located one nautical mile northeast of the central business district of Memphis, a city in Hall County, Texas, United States.- Facilities and aircraft :...
, TennesseeTennesseeTennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...
, September 1946- Reassigned to Morrision Field, FloridaFloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
and redesignated as 1103rd Army Air Field Base Unit, October 1946.
- Reassigned to Morrision Field, Florida
- Air Transport Command, Atlantic Division
- C-74 Squadron, 1103rd Army Air Field Base Unit, Morrison Field, FloridaFloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
, October 1946* - 2nd Air Transport Group (Provisional), Morrison Field, Florida, March 1947*
- 21st Air Transport Squadron (Provisional)
- 22nd Air Transport Squadron (Provisional)
- 3rd Air Transport Group (Provisional), Morrison Field, Florida, May 1947*
- 31st Air Transport Squadron (Provisional)
- 32nd Air Transport Squadron (Provisional)
* Aircraft, support personnel and equipment reassigned to Brookley AFB, 1 July 1947 and redesignated 521st Air Transport Group upon closure of Morrison Field
- Military Air Transport ServiceMilitary Air Transport ServiceThe Military Air Transport Service is an inactive Department of Defense Unified Command. Activated on 1 June 1948, MATS was a consolidation of the United States Navy Naval Air Transport Service and the United States Air Force Air Transport Command into a single, joint, unified command...
, Atlantic Division, Brookley AFB, AlabamaAlabamaAlabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...
- 521st Air Transport Group, 1 July 1947
- 17th Air Transport Squadron
- 19th Air Transport Squadron
- Redesignated: 1601st Air Transport Group, 1 October 1948 (Reassigned to Continental DivisionTwenty-Second Air ForceTwenty-Second Air Force is a Numbered Air Force component of Air Force Reserve Command . It was activated on 1 July 1993 and is headquartered at Dobbins Air Reserve Base, Georgia....
)- 1260th Air Transport Squadron (Merger of 17th and 19th Air Transport Squadrons)
- Redesignated: 1703d Air Transport Group1703d Air Transport GroupThe 1703d Air Transport Group is an inactive United States Air Force unit. Its last was assigned to the 1701st Air Transport Wing, Military Air Transport Service, stationed at Brookley Air Force Base, Alabama...
, 1 October 1949 (MATS Continental Division)- 1260th Air Transport Squadron, October 1949 – July 1952
- 6th Air Transport Squadron (Heavy), 1 July 1952 (Inactivated 30 June 1955 and merged with 3d ATS)
- 3rd Air Transport Squadron (Heavy), 1 July 1952 – 1 November 1955**
** C-74 Aircraft kept in flyable storage, 1 November 1955 – 31 Mar 1956, being reassigned to 3040th Aircraft Storage Group, Davis-Monthan AFB, Arizona for disposition.