Basic operating weight

Operating empty weight ('OEW') or 'Basic operating weight' or 'Empty Operating Weight' as is most commonly known is the standard basic weight for any particular series or any particular configuration. The aircraft is periodically weighed and its weight is listed with each structural modification order, or any configuration order which may alter the 'Empty Operating weight.' The EOW only includes all fluids necessary for operation such as engine oil, engine coolant, water, hydraulic fluidand the unusable fuel volume as calculated and then any extra fixed operator items and optional equipment required for flight. From there, 'any' weight 'Added' to the aircraft is the Total Payload, above the EOW, which consists of (a)Cargo (b)luggage (c) Passengers and Crew (d) stores (e) service load such as meals and beverages (f) Fuel load. The operating empty weight (OEW) is basically the sum of the manufacturer's empty weight (MEW), standard items (SI), and operator items (OI). all additional 'weight' added is computed for weight, Arm, moment calculations to determine the center of gravity.

OEW = MEW + SI + OI

Aircraft purchase price is a near linear function of operating empty weight.

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