Hi All,

Would appreciate if anyone can share some thoughts on the OPC settings (in general, not AeroWinx) in the FMC for Cost Index.

This relates to the OPC file the FMS has where the unit of measurement can either be kg or lbs. Is it true that even for an airline that operates in pounds, this setting can be set to Kgs. I believe the calculation for the Cost Index is different.

Time Cost_per_Hr/Fuel_cost_per_tonne = Kgs/min (CI)
or Time Cost_per_Hr/Fuel_cost_cents_per_pound = 100 lbs/Hr (CI).

Thanks so much especially the Avionics engineers in this forum.

Cheers,
Raymond