Aircraft Drawings
Which line is drawn from a note, dimension, or part number to the specific feature it refers to and terminates in an arrowhead touching that feature?
Answer
Leader line
A leader line connects a note, dimension, or callout to the exact feature it describes and ends in an arrowhead (or dot) at that feature. An extension line projects out from the object to bound a dimension, a center line marks an axis of symmetry, and a phantom line shows an alternate position or adjacent part.
Source: FAA-H-8083-30B, Chapter 4 (Aircraft Drawings), 'The Meaning of Lines — Leader Lines.'
Not the answer
- Center line
- Extension line
- Phantom line
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