Open full authority timing control technology is a rapidly growing development in aviation and aerospace, including open control technology, full authority control technology, and timing control technology. Due to aircraft engine works in complex electromagnetic environments, a highly reliable and robust digital electronic engine control (DEEC) system is required. Firstly, this paper presents a novel easy-implemented digital-timing instruction of open full authority of DEEC system to accurately record data and reliably execute instruction. Subsequently, the proposed transmission scheme of timing instruction is implemented based on cycle-redundancy check and repeated-request so as to error-data will be eliminated. In addition, the proposed verification scheme of timing instruction determines reliability of storage based on the FPGA and Nand-Flash. The experimental results show that the reliability and accuracy timing instruction are guaranteed in a complex electromagnetic environment.