LOCALIZER TYPE DIRECTIONAL AID (LDA)

A localizer with an angular offset that exceeds 3 degrees of the runway alignment, used for nonprecision instrument approaches with utility and accuracy comparable to a localizer, but which are not part of a complete ILS.

Listed in the Pilot/Controller Glossary as a cross-reference to LOCALIZER TYPE DIRECTIONAL AID (LDA), whose text is shown above.

Source FAA Pilot/Controller Glossary↗ · checked 2026-08-25