The wing was first organized in at Haneda Air Base in June 1948 as the  540th Air Transport Wing by Military Air Transport Service (MATS).
 Along with its subordinate units, it replaced the 22d Air Transport Group (Provisional) and absorbed the personnel and equipment of the 1539th Air Force Base Unit of Air Transport Command, which had been stationed at Haneda since the summer of 1946.
 The wing was soon renamed the 1503d Air Transport Wing to comply with United States Air Force requirements that MATS units be numbered between 1200 and 2199.

The 1503d became the main MATS organization in the Western Pacific, supporting numerous tenant organizations such as the Air Rescue Service; Air Weather Service, and Far East Air Force theater Troop Carrier Groups (later Wings) which transshipped supplies and personnel from the MATS Aerial Port at Tachikawa throughout the 1950s.

The first major mission by the 1503d was the evacuation of large numbers of Americans out of China in 1948 after the Communists defeated the Chinese Nationalist forces during the Chinese Civil War.

The Korean War saw operations increase, with Troop Carrier units carrying out the evacuation of American civilians and then transporting the torrent of Allied military men and material flowing into the war zone.
Around the clock planes arrived and departed.
A typical flight might carry 35,000 pounds of hand grenades to South Korea, with 80 wounded personnel arriving to be transported to the USAF Hospital on the base.
For thousands of servicemen whose tours took them into, through or out of Tachikawa, the USAF hospital became the best barometer of American military activities in the Far East.

MATS flights arriving on C-118, C-121, C-124, and later C-135 jet transports from Hickam Field, Hawaii or being staged through Alaska.
From Tachikawa, outbound MATS flights headed to Clark Air Base heading to Saigon, Bangkok, and on to Karachi Airport, Pakistan or to Guam, Wake or Midway Island in the Central Pacific Region.

As United States military forces began to increase in Indochina, more and more equipment moved into first Tan Son Nhut Air Base in South Vietnam, then to Don Muang Royal Thai Air Force Base, near Bangkok, and in early 1965 to the huge new Cam Ranh Air Base with the jet C-141 Starlifter transports.

In 1964, operations from Tachikawa began to phase down as its location in the urban area of Tokyo made heavy transport operations undesirable, with more and more heavy transport operations going to Yokota Air Base.
The 1503d was discontinued and replaced by the 1503d Air Transport Group, and focused more on aeromedical transport operations from the Philippines, and supporting MATS units at deployed locations in the Pacific.
The wing was first organized in at Haneda Air Base in June 1948 as the  540th Air Transport Wing by Military Air Transport Service (MATS).  Along with its subordinate units, it replaced the 22d Air Transport Group (Provisional) and absorbed the personnel and equipment of the 1539th Air Force Base Unit of Air Transport Command, which had been stationed at Haneda since the summer of 1946.  The wing was soon renamed the 1503d Air Transport Wing to comply with United States Air Force requirements that MATS units be numbered between 1200 and 2199.
The 1503d became the main MATS organization in the Western Pacific, supporting numerous tenant organizations such as the Air Rescue Service; Air Weather Service, and Far East Air Force theater Troop Carrier Groups (later Wings) which transshipped supplies and personnel from the MATS Aerial Port at Tachikawa throughout the 1950s.
The first major mission by the 1503d was the evacuation of large numbers of Americans out of China in 1948 after the Communists defeated the Chinese Nationalist forces during the Chinese Civil War.
The Korean War saw operations increase, with Troop Carrier units carrying out the evacuation of American civilians and then transporting the torrent of Allied military men and material flowing into the war zone. Around the clock planes arrived and departed. A typical flight might carry 35,000 pounds of hand grenades to South Korea, with 80 wounded personnel arriving to be transported to the USAF Hospital on the base. For thousands of servicemen whose tours took them into, through or out of Tachikawa, the USAF hospital became the best barometer of American military activities in the Far East.
MATS flights arriving on C-118, C-121, C-124, and later C-135 jet transports from Hickam Field, Hawaii or being staged through Alaska. From Tachikawa, outbound MATS flights headed to Clark Air Base heading to Saigon, Bangkok, and on to Karachi Airport, Pakistan or to Guam, Wake or Midway Island in the Central Pacific Region.
As United States military forces began to increase in Indochina, more and more equipment moved into first Tan Son Nhut Air Base in South Vietnam, then to Don Muang Royal Thai Air Force Base, near Bangkok, and in early 1965 to the huge new Cam Ranh Air Base with the jet C-141 Starlifter transports.
In 1964, operations from Tachikawa began to phase down as its location in the urban area of Tokyo made heavy transport operations undesirable, with more and more heavy transport operations going to Yokota Air Base. The 1503d was discontinued and replaced by the 1503d Air Transport Group, and focused more on aeromedical transport operations from the Philippines, and supporting MATS units at deployed locations in the Pacific.
1503d Air Transport Wing