What is the term for a specific measured distance from the datum to a point on an aircraft?

What is the term for a specific measured distance from the datum to a point on an aircraft?

• A. zone number
• B. reference number
• C. station number
• D. measurement zone

Answer: (C)

In aircraft dimensional layouts, the distance from a fixed reference line or point (the datum) to a feature along the aircraft’s length is called a station. Stations mark where along the longitudinal axis a point lies and are used to locate frames, ribs, fittings, and other features on drawings and during assembly. For example, a feature located a certain distance aft of the datum is identified by its station number. Other terms like zone or reference aren’t used to denote this specific longitudinal distance, so the station name is the right fit.

In aircraft dimensional layouts, the distance from a fixed reference line or point (the datum) to a feature along the aircraft’s length is called a station. Stations mark where along the longitudinal axis a point lies and are used to locate frames, ribs, fittings, and other features on drawings and during assembly. For example, a feature located a certain distance aft of the datum is identified by its station number. Other terms like zone or reference aren’t used to denote this specific longitudinal distance, so the station name is the right fit.