teine piloot, kes õhusõiduki kapteni järelevalve all täidab kapteni kohustusi ja ülesandeid, a co-pilot performing, under the supervision of the pilot-in-command, the duties and functions of a pilot-in-command, co-pilot performing, under the supervision of the pilot-in-command, the duties and functions of a pilot-in-command, in accordance with a method of supervision acceptable to the Licensing Authority