11) i. Apache AH-64A Variant
The AH-64A was the first assault helicopter to enter production. In an armored compartment, the crew sits side by side. Two GE T700 turboshaft engines power the ship. The 701 engine was used in the A-model until 1990, when the engines were replaced with the more powerful 701C variant. Boeing was awarded a $136.8 million contract on September 25, 2012, to remanufacture the last 16 AH-64As into the AH-64D Block II configuration.
11) i. Apache AH-64A Variant
11) ii. Apache AH-64C Variant
In late 1991, Congress approved additional cash for a program to convert AH-64As to AH-64B+ versions. The plan to upgrade to the AH-64C was revised due to this additional money. Except for mast-mounted radar and newer 700C engine variants, the C upgrade would contain all changes made to the Longbow. After 1993, however, the C designation was no longer used. The sole difference between the C model and the radar-equipped D model after AH-64As received the upgraded engine in 1990 was the radar, which could be swapped from one aircraft to another. As such, the decision was made to eventually label both variants “AH-64D.”
11) ii. Apache AH-64C Variant
