AIRCRAFT REFERENCE SYSTEM
Fuselage Stations and Reference Lines
Stations, buttock lines and water lines used to locate aircraft structure.
Key reference points
- Stations normally locate positions along the aircraft length.
- Buttock lines locate positions left or right of a reference plane.
- Water lines locate vertical positions from a defined datum.
Training-reference boundary
This summary is not approved repair or maintenance data. Do not inspect, classify, select material, alter structure or perform a repair from this page alone. Use the current applicable SRM, AMM, engineering order, drawing and company procedures.