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Category IIIa Operations (CAT IIIa) (ILC_4)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: ilc_4.ttl
- Name
catIIIaOps- Attribute
- ILC Instrument Landing System (ILS) Facility Performance Category
- Definition
- An ILS which, with the aid of ancillary equipment where necessary, provides guidance information from the coverage limit of the facility to, and along, the surface of the runway.
- Description
- This operation requires a decision height lower than 30 metres (100 feet), or no decision height; and runway visual range not less than 200 metres. ILS or MLS are the facilities that provide guidance information.
- Accepted
- 2013-10-18
- Allowed for
- GA091 Instrument Landing System (ILS) Localizer
- GA093 Microwave Landing System (MLS) Azimuth
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.