Editing Advanced Medium STOL Transport (section)

{{Use dmy dates|date=June 2023}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox aircraft begin
  |name = Advanced Medium STOL Transport
  |image = {{Multiple image
    |direction = vertical
    |border = infobox
    |image1 = Yc14-1 072.jpg
    |caption1 = [[Boeing YC-14]]
    |image2 = McDonnell Douglas YC-15A.jpg
    |caption2 = [[McDonnell Douglas YC-15]]
  }}
}}{{Infobox aircraft program
  |aim = tactical transport
  |requirement =
  |issuer = [[United States Air Force]]
  |service =
  |value =
  |initiated =
  |proposals =
  |prototypes = [[Boeing YC-14]] <br> [[McDonnell Douglas YC-15]]
  |concluded =
  |outcome = Canceled
  |predecessors =
  |successors = [[Boeing C-17 Globemaster III|C-X program]]
  |related =
}}
|}

The '''Advanced Medium STOL Transport''' ('''AMST''') project was intended to replace the [[Lockheed C-130 Hercules]] tactical transport in [[United States Air Force]] service with a new aircraft with improved [[STOL]] performance. Increased need for strategic airlift led the Air Force to cancel the AMST program and seek a larger airlifter. Under the C-X program, the YC-15's basic design would become the successful [[Boeing C-17 Globemaster III|McDonnell Douglas (later Boeing) C-17 Globemaster III]].