Depiction of the "Inverse C" Symbol on Korea Approach Procedures
Created Date:
Sep 2021
Article ID:
000005199
Version:
3
Environment:
N/A
Document Type(s):
--
Related Products: --
QUESTION:
The AIP procedure source documentation for some locations/approach procedures in Korea depict an "Inverse C" in the Circle-to-Land minimums. When depicted on an approach, this symbol indicates that an expanded circling area is being used. Why is this symbol not charted on the Jeppesen approach charts?
ANSWER:
Until the 2020/2021 timeframe, the "Inverse C" was only displayed on approach charts that contained FAA-designed procedures, and was done when the procedure source contained the proper documentation that stated the Circle-to-Land minimums were based on TERPS 8260.3B Change 21 or later. Our Standards group previously reviewed the use of the "Inverse C" symbol at locations outside of the U.S. (e.g. Korea) and determined that we did not want to introduce symbols that are unique to the U.S. (FAA) at these locations. The reason was that it could cause confusion because the symbol had only applied to procedures that are maintained by the FAA, and it could give pilots the impression that non-U.S procedures have FAA-developed minimums.
With the release of our new AOM concept, the use of the "Inverse C" was reviewed again by our Standards group and the Airway Manual Introduction pages were updated to allow for its use at non-U.S. locations provided that certain conditions were met within the State-published AIP source. The conditions are that the AIP source has to contain a note stating that minimums are based on U.S. TERPS, and that Circle-to-Land minimums have to indicate the "Inverse C". The AIP source for Korea does meet this criteria and we have begun adding the "Inverse C" to the applicable locations. This is being done on an 'as-revised' basis, so some of the affected locations may not yet contain the depiction of the "Inverse C".
The AIP procedure source documentation for some locations/approach procedures in Korea depict an "Inverse C" in the Circle-to-Land minimums. When depicted on an approach, this symbol indicates that an expanded circling area is being used. Why is this symbol not charted on the Jeppesen approach charts?
ANSWER:
Until the 2020/2021 timeframe, the "Inverse C" was only displayed on approach charts that contained FAA-designed procedures, and was done when the procedure source contained the proper documentation that stated the Circle-to-Land minimums were based on TERPS 8260.3B Change 21 or later. Our Standards group previously reviewed the use of the "Inverse C" symbol at locations outside of the U.S. (e.g. Korea) and determined that we did not want to introduce symbols that are unique to the U.S. (FAA) at these locations. The reason was that it could cause confusion because the symbol had only applied to procedures that are maintained by the FAA, and it could give pilots the impression that non-U.S procedures have FAA-developed minimums.
With the release of our new AOM concept, the use of the "Inverse C" was reviewed again by our Standards group and the Airway Manual Introduction pages were updated to allow for its use at non-U.S. locations provided that certain conditions were met within the State-published AIP source. The conditions are that the AIP source has to contain a note stating that minimums are based on U.S. TERPS, and that Circle-to-Land minimums have to indicate the "Inverse C". The AIP source for Korea does meet this criteria and we have begun adding the "Inverse C" to the applicable locations. This is being done on an 'as-revised' basis, so some of the affected locations may not yet contain the depiction of the "Inverse C".