如果您曾在美军担任过航空维修技术员，那么根据您的经验，FAA会签发认可书，以进行FAA航空机械师证书的测试，包括机身和动力装置等级。尽管您拥有认可，但您缺乏成功通过认证考试所需的特定民用航空维护经验。该证书通过使您熟悉民航业独有的法规，程序，技术和流程，提供了弥合从军事航空维护环境到广泛的民用航空维护所必需的知识和实践经验。您将需要具备文件记录的军事训练和飞机维修技术人员的经验，并且需要FAA签发的认可书才能通过FAA实用测试，以获取FAA航空机械师的机身和动力装置等级证书。
If served in the United States military as an aviation maintenance technician, as a result of your experience the FAA issued the endorsement to be tested for the FAA Aviation Mechanic Certificate with Airframe and Powerplant ratings. Although you possess the endorsement, you lack the specific civilian aviation maintenance experience required to successfully pass the certification examination. This certificate provides the knowledge and practical experience necessary to bridge the gap from the military aviation maintenance environment to the broad spectrum of civilian aviation maintenance by familiarizing you with the regulations, procedures, technology and processes unique to the civilian aviation industry. You will be required to have documented military training and experience as an aircraft maintenance technician and the FAA-issued endorsement required to take the FAA practical test for the FAA Aviation Mechanic certificate with Airframe and Powerplant ratings.