To solve this question you need to work out the total moment
and total mass, after putting the crew on.
The BEM moment = 6000 x 4.7 = 28200 kg.m
The pilot weighing 90kg has moment from the table , column A, of 184kg.m
The co-pilot weighing 100kg has a moment from the table, column A, of 204kg.m
The flight engineer weighing 80kg has a moment from the table, column B, of
215kg.m
The total moment = 28803kg.m and the total mass = 6270 kg.
CG = moment/mass
= 28803/6270 = 4.594m
Answer: 6270 kg CG 4.594m