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GLS approach

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GLS  Z or W approach  . What is the meaning of suffix Z or w

3 Answers



  1. John D Collins on Jul 28, 2023

    Suffixes starting from Z are used to distinguish approach procedures to the same runway use the same Navigation aid/system. Suffixes beginning at A are used for circling approaches.

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  2. Bryan on Jul 28, 2023

    The addition of letters to an approach starting at the end of the alphabet mean that there are two or more straight-in approaches for the same runway. The differences between them are equipment and pilot certification and they usually have some differences in approach minimums, circling procedures, etc. The approach labeled Z will have the lowest minimums–which also means it will have the highest aircraft equipment and pilot certification requirements.

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  3. awair on Aug 03, 2023

    Some of the differences that I have seen include:

    Different direction missed approach (for parallel or converging runway operations)
    Use of ILS DME, versus alternate VOR DME on an ILS approach
    Different minima on account of better missed approach climb gradient.

    I’m sure there are others.

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