New ICAO OLS Series - The Surface for Straight-In Instrument Approaches - Pager Power
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New ICAO OLS Series - The Surface for Straight-In Instrument Approaches - Pager Power
The International Civil Aviation Organization (ICAO) has proposed new Obstacle Limitation Surfaces (OLS) which are expected to be brought into force from November 2028. In this edition we will explore the Surface for Straight-In Instrument Approaches (SIIA). This will be an Obstacle Evaluation Surface (OES), designed specifically to safeguard non-precision instrument arrivals, including aircraft guided by VHF Omnidirectional Radar (VOR) and othe…
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