LN (Luftfahrtnorm) documents are German aerospace standards developed within the national standardization system for aircraft materials, parts, and test methods.
Why LN standards matter in testing
An LN standard defines the geometry and procedure for aerospace-specific mechanical tests, such as shear testing of fasteners and bolts, supporting qualification and quality control in aviation manufacturing.
What LN standards cover
LN covers aerospace fasteners, joints, and related hardware, including strength tests performed on universal testing machines with appropriate fixtures.
How to read an LN designation
LN designations use the LN prefix and a number — for example, LN 65150 for a double shear test of screws and bolts.