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The Advanced Medium STOL Transport
) 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.
The Advanced Medium STOL Transport project arose from a USAF requirement released in 1968. The official RFP was issued in 1972, asking for a C-130-class aircraft with short take-off and landing capability. This included operating from a semi-prepared field with a radius with a payload. The C-130 of that era required about for this load.
Five companies submitted designs at this stage of the competition. On 10 November 1972 the downselect was carried out, and Boeing
and McDonnell Douglas
won development contracts for two prototypes each. This resulted in the YC-14
Both the YC-14 and YC-15 met the specifications of the contest under most conditions. Both types had higher drag than expected, which decreased performance.
The increasing importance of the strategic vs. tactical mission... Read More