LDA stands for which of the following?

LDA stands for which of the following?

• A. Localizer Type Directional Aid
• B. Localizer Directional Aid
• C. Localized Directional Antenna
• D. Local Direction Antenna

Answer: (A)

Localizer Type Directional Aid is the term used for an approach aid that provides azimuth, or lateral, guidance similar to an ILS localizer, but it may be offset from the runway centerline and typically does not include vertical guidance. The word “Type” signals that it’s based on a localizer concept rather than a different kind of directional antenna. This is why the correct expansion is Localizer Type Directional Aid. Other options don’t fit because they either replace or omit the word “Type,” or describe terms not used for this aviation approach aid.

Localizer Type Directional Aid is the term used for an approach aid that provides azimuth, or lateral, guidance similar to an ILS localizer, but it may be offset from the runway centerline and typically does not include vertical guidance. The word “Type” signals that it’s based on a localizer concept rather than a different kind of directional antenna. This is why the correct expansion is Localizer Type Directional Aid.

Other options don’t fit because they either replace or omit the word “Type,” or describe terms not used for this aviation approach aid.