Some special departments in US forces also use T-38A. Test pilots and flight test engineers are trained in T-38A's at the U.S. Air Force Test Pilot School at Edwards Air Force Base, Calif. Air Force Materiel Command uses the T-38A to test experimental equipment such as electrical and weapon systems. Air Education and Training Command uses the modified AT-38B to train pilots for fighter aircraft such as the F-15, F-16 and A-10. The AT-38B has a gun sight and practice bomb dispenser. The T-38A once served in the Thunderbird, but after a 6 aircrafts accident, it is replaced by the F-16s.

美空军的一些特殊部门也使用T-38A。如试飞员和试飞工程师就在加州爱德华兹空军基地的空军试飞中心进行训练。空军后勤司令部用T-38A测试试验装备电子，如武器系统等。空中教练司令部使用改进过的AT-38B训练F-15、F-16、A-10等作战飞机的飞行员。AT-38B装有机炮瞄准装置和训练弹投掷装置。T-38A还曾在“雷鸟”飞行队服役，但因一次6机撞地意外，被F-16所取代。

Once there are 1,189 T-38s in the US forces, 638 remained in 1993. Taiwan also has about 40 T-38As.

美军曾有1189架T-38服役，到1993年仍有638架。台湾有约40架T-38A。

And modification is carried out. Pacer Classic is a program designed to extend the structural life of the T-38 to 2020. Future major modifications to the T-38 avionics systems will result in all Talons being redesignated as T-38C models. The unit cost is about $756,000. Jul 1996, Boeing had got a $45.6 million contract from Airforce for updating the avionics. In Nov 2001, Boeing signed another $45.3 million contract. This time the update include the wide vision HUD in the front cockpit, the multi-purpose display, the digital engine display, the new pannel in both cockpits, GPS/INS system and airborne impact avoiding system.

改进工作也在进行中。在“遛马”计划中，T-38的结构寿命将延长至2020年。未来的主要改进包括改进其电子设备，改进后所有的“禽爪”将升级为T-38C。目前单价约75万美元。1996年7月波音公司得到了4560万美元的电子设备升级合同。2001年11月波音公司与美国空军签署了一项4530万美元的合同。这次升级包括前座舱的一个宽视野平显、一个多功能显示器、一个发动机电子显示器、前后座舱的控制面板、全球定位/惯性导航组合系统以及一套空中防碰撞系统。下图为改进后的座舱，可满足新型战斗机空地作战训练的需要。一年后，波音已经交付了100架T-38C。

2002年11月美国空军空中教育和训练司令部(AETC)接收了首架装有改进引射器、发动机和进气道的T-38C教练机。新的动

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