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What is the difference between Y and Z approaches?
The first one has the letter “Y” after the word “RNAV” and the second approach has the letter “Z” after the word “RNAV.” Because databases cannot handle duplicate file names, two approach procedures with the identical name to the same runway cannot be included in the database.
How are approaches named?
Approaches are named based on the navigation system required to execute the approach. Most approaches are aligned with a runway and will include a runway number in the approach title (VOR RWY 25); these approaches include straight-in landing minimums to the runway in the title.
What is Z approach?
“When two or more straight-in approaches with the same type of guidance exist for a runway, the FAA adds a letter suffix to the title of the approach for identification purposes. These approach charts start with the letter Z and continue in reverse alphabetical order.
What is ILS Z approach?
The ILS Z or LOC Z RWY 2 approach uses conventional ground based Navaids of VOR and DME for that purpose and has an MSA. Anytime the same navigation facility is used for the final approach, but there are multiple versions for whatever reason, an index letter starting at Z, Y, X ..
What does Z mean on an approach plate?
When do you add a suffix to an approach chart?
When two or more straight-in approaches with the same type of guidance exist for a runway, a letter suffix is added to the title of the approach so that it can be more easily identified. These approach charts start with the letter Z and continue in reverse alphabetical order.
Why do approach charts start with the letter Z?
These approach charts start with the letter Z and continue in reverse alphabetical order. Because only one of each type of approach for a runway, i.e. ILS or GPS can be coded into a database, a method to distinguish between the two approaches was developed.
What’s the difference between a Y and Z approach?
The FAA started at the back of the alphabet to hold down confusion between the RNAV approaches and the old VOR or NDB approaches, which are labeled A, B, etc. You would need to post actual examples, but sometimes Y and Z approaches have different minimums based on the missed approach climb capability of the airplane.
When to use z, y, x on approach plates?
The Z, Y, X is used when the approach has a runway number. The letters A, B, C are used for circling approaches (e.g., VOR-A). At SVH we had an old ILS 23 that had a hold-in-loo and then they added one with a TAA; so these needed the Y and.