The intent of this document is to define the electric power quality requirements for DoD aircraft, however it may also be used with commercial aircraft or other types of vehicles. Other industry documents such as SAE-AS1212 and ISO 1540 also define aircraft electric power quality requirements. These documents are generally not appropriate for use with military aircraft because they do not address all of the areas of concern with military aircraft electric power quality and often require wider limits compared to this document due to the differences in the types and sizes of aircraft covered. In addition, they do not always take into account legacy DoD aircraft electrical power systems or legacy DoD utilization equipment. The power characteristics requirements of this document also apply to commercial and non-developmental utilization equipment purchased in accordance with the policy described in the SD-2, "Buying Commercial & Nondevelopmental Items: A Handbook". If such equipment does not fully comply with the power characteristics requirement of this document, the effect of the equipment noncompliance on the electrical power quality and on the equipment capability to perform its intended function in the aircraft should be evaluated.