Skip to content
View in the app

A better way to browse. Learn more.

iniBuilds Forum

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

RNP (AR) Approach Path drawing Error

Featured Replies

In VNKT RNP Y Rwy 02 (AR) Approach via IGRIS, the leg between KT552 and KT550 should be a RF leg, but in ND and MCDU, it's just a straight lineScreenshot 2026-05-19 145910.pngScreenshot 2026-05-19 150748.png

KT550 is the last point in approach transition and the first point in final approach. There are two lines in database, the first line is approach transition with path_termination 'RF' and waypoint_description_code 'EE ', while the second line is final approach with path_termination 'IF' and waypoint_description_code 'E F'.

So I think there is something missed when the aircraft processing the path.

  • Author

Also with RNP AR Z

Screenshot 2026-05-19 153803.png

I think this issue also happens on A340

Edited by Jack Zhu

  • Staff

I'd be curious what the leg is coded as in the Navigraph database, as what is depicted on the chart is not always what actually gets exported into the database - I will take a look.

Regarding the actual approach, did the aircraft fly the procedure within acceptable limits?

AMD 7800x3d - 64gb RAM - nVidia RTX 5080

  • Author
28 minutes ago, iniSteven said:

I'd be curious what the leg is coded as in the Navigraph database, as what is depicted on the chart is not always what actually gets exported into the database - I will take a look.

Regarding the actual approach, did the aircraft fly the procedure within acceptable liBecausemits?

RNP AR procedure always require at least RNP 0.3nm, so I think replace the RF leg with a direct leg is not acceptable🤔. Also, there is terrain ahead🙃

  • Staff
6 minutes ago, Jack Zhu said:

RNP AR procedure always require at least RNP 0.3nm, so I think replace the RF leg with a direct leg is not acceptable🤔. Also, there is terrain ahead🙃

So what I'm asking is did the plane fly within RNP .3nm or did it deviate too far? For clarity the radius of that curve is approx .1nm, so again it depends on what exactly is in the database the aircraft is reading from, but for that specific leg it's within the approach specifications.

Did you actually fly the approach?

AMD 7800x3d - 64gb RAM - nVidia RTX 5080

Create an account or sign in to comment

Account

Navigation

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.