  The civil aviation community is actively exploring and developing the
solutions of single pilot operations SPO for large commercial aircraft. Human
factors engineering research for SPO has been launched, and the research mainly
focuses on three research solutions: flight deck airborne equipment upgrade,
flight support from ground stations, and the combined SPO solution of "flight
deck airborne equipment upgrade, flight support from ground stations". This
paper reviews and analyzez the progress of human factors engineering research
on SPO. The preliminary research outcome tends to support the combined SPO
solution. However, the current human factors engineering research is not
comprehensive and cannot provide a complete human factors engineering solution
for SPO. For future human factors engineering research, this paper analyzes the
key human factors issues on SPO and points out the gaps in the current research
and the areas for future work. Finally, this paper puts forward an overall
strategy and recommendations for future human factors engineering research on
SPO.
