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Instrument Procedures Handbook

FAA-H-8083-16B Version 2017
All Library Documents FAA Source

Chapter 6

Airborne Navigation Databases

  • Direct to a fix or DF leg—defines an unspecified track starting from an undefined position to a specified fix. [Figure 6-9]
  • Fix to an altitude or FA leg—defines a specified track
Figure 6-11. Track from a fix from a distance or FC leg.
Figure 6-11. Track from a fix from a distance or FC leg.
Figure 6-12. Track from a fix to a DME distance or FD leg.
Figure 6-12. Track from a fix to a DME distance or FD leg.
Figure 6-13. From a fix to a manual termination or FM leg.
Figure 6-13. From a fix to a manual termination or FM leg.

over the ground from a database fix to a specified altitude at an unspecified position. [Figure 6-10]

  • Track from a fix from a distance or FC leg—defines a specified track over the ground from a database fix for a specific distance. [Figure 6-11]
  • Track from a fix to a distance measuring equipment (DME) distance or FD leg—defines a specified track over the ground from a database fix to a specific DME distance that is from a specific database DME NAVAID. [Figure 6-12]
  • From a fix to a manual termination or FM leg— defines a specified track over the ground from a database fix until manual termination of the leg. [Figure 6-13]
  • Course to an altitude or CA leg—defines a specified course to a specific altitude at an unspecified position. [Figure 6-14]
  • Course to a DME distance or CD leg—defines a
Figure 6-14. Course to an altitude or CA leg.
Figure 6-14. Course to an altitude or CA leg.
Figure 6-15. Course to a DME distance of CD leg.
Figure 6-15. Course to a DME distance of CD leg.
Figure 6-16. Course to an intercept or CI leg.
Figure 6-16. Course to an intercept or CI leg.
Figure 6-17. Course to a radial termination or CR leg.
Figure 6-17. Course to a radial termination or CR leg.

specified course to a specific DME distance that is from a specific database DME NAVAID. [Figure 6-15]

  • Course to an intercept or CI leg—defines a specified course to intercept a subsequent leg. [Figure 6-16]
  • Course to a radial termination or CR leg—defines a course to a specified radial from a specific database VOR NAVAID. [Figure 6-17]
Figure 6-18. Arc to a fix or AF leg.
Figure 6-18. Arc to a fix or AF leg.
Figure 6-19. Heading to an altitude termination or VA leg.
Figure 6-19. Heading to an altitude termination or VA leg.
  • Arc to a fix or AF leg—defines a track over the ground at a specified constant distance from a database DME NAVAID. [Figure 6-18]
  • Heading to an altitude termination or VA leg—
Figure 6-20. Heading to a DME distance termination or VD leg.
Figure 6-20. Heading to a DME distance termination or VD leg.

defines a specified heading to a specific altitude termination at an unspecified position. [Figure 6-19]

  • Heading to a DME distance termination or VD leg—defines a specified heading terminating at a specified DME distance from a specific database DME NAVAID. [Figure 6-20]
  • Heading to an intercept or VI leg—defines a specified heading to intercept the subsequent leg at an unspecified position. [Figure 6-21]
Figure 6-21. Heading to an intercept or VI leg.
Figure 6-21. Heading to an intercept or VI leg.
Figure 6-22. Heading to a manual termination or VM leg.
Figure 6-22. Heading to a manual termination or VM leg.