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According to FAA Order 8260.3D - U.S. Standard for Terminal Instrument Procedures (TERPS) Chapter 2, Section 2-1, 2-1-3, Level OCS is applied to STAR, feeder, initial and intermediate approach segments.

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This is also clarified by Figure 2-1-5 (Segments of an Approach Procedure) where the level OCS is clearly illustrated.

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My question is whether the same thing applies to ICAO approach segments.

Based on ICAO Manual Doc 8168 Volume I Version 6, Figure II-5-1-1 (Segments of instrument approach) it is not clear whether the level OCS applies to the respective segments, since no profile picture is provided within the manual.

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    $\begingroup$ I think you might be looking for the term CDO (Continuous descent operation). In ICAO DOC 8168 Vol. II it is described as "An operation, enabled by airspace design, procedure design and ATC, in which an arriving aircraft descends continuously, to the greatest possible extent, by employing minimum engine thrust, ideally in a low drag configuration, prior to the final approach fix /final approach point." $\endgroup$ – miceagol Nov 14 '19 at 9:47

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