Definition
The empty weight of an aircraft plus the weight of the required crew, their baggage, and any other standard items needed for a particular flight, but not including payload (passengers, cargo) or usable fuel. It represents what the aircraft weighs when it is ready to be loaded with fuel and payload for a specific operation.
Plain English
What the aircraft weighs once the crew and their gear are on board, but before you add fuel, passengers, or cargo. It is the starting weight for working out how much load the aircraft can still carry.
Context Anchor
Seen in weight and balance planning, especially when checking whether the aircraft is within allowed weight limits before takeoff.
Derivation
‘Operating’ comes from the Latin operari, meaning ‘to work.’ The operating weight is the weight of the aircraft as configured to do its job — set up and crewed — but not yet loaded with what it will actually carry on the trip.
Why Pilots Care
It determines whether the aircraft meets maximum takeoff weight limits and has adequate runway and climb performance.
Analogy
It is like weighing a car before a trip: the car has its own weight, but the operating weight includes the driver, passengers, bags, and fuel in the tank.
Intuition Check
Do not read operating weight as just the published empty weight of the aircraft. Here it means the aircraft’s real, current weight as it is being operated, with the actual load on board.
Example Sentence 1
After adding the captain, first officer, and their bags to the empty weight, the dispatcher recorded the operating weight on the load sheet.
Example Sentence 2
A last-minute passenger change required the crew to recalculate the operating weight to stay within limits.