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inner marker
- Definição1
- A marker beacon used with an ILS (CAT II) precision approach located between the middle marker and the end of the ILS runway, transmitting a radiation pattern keyed at six dots per second and indicating to the pilot, both aurally and visually, that he/she is at the designated decision height (DH), normally 100 feet above the touchdown zone elevation, on the ILS CAT II approach. It also marks progress during a CAT III approach.
- Fonte1
- FEDERAL AVIATION ADMINISTRATION. Pilot/controller glossary (P/CG). 2014. Disponível em: https://www.faa.gov/air_traffic/publications/atpubs/pcg/index.htm. Acesso em: 10 jun. 2014.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Handbook on radio frequency spectrum requirements for civil aviation. 1st ed. Montreal, 2014. (Doc. 9718)
- Nota Adicional2
- Acronym in English: IM.
- Contexto
- The outer marker is nominally at 7.5 km from the runway threshold, the middle marker at 1 050 m from the threshold and, where installed, the inner marker is located just prior to the threshold. In addition, markers may also be used to mark significant points on air routes.
- Subárea
- Air Navigation Aids
- Related Term
- middle marker
- outer marker
- Français
- radioborne intérieure