This document has been taken directly from U.S. Military Specification MIL-C-81790A, Amendment 1 and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-C-81790A, Amendment 1. Any part numbers established by the original specification remain unchanged. This specification covers the requirements for aircraft external electric power receptacles.