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AA.VI.E.R2FAA-S-ACS-11A · Nov 2023Risk management

Selecting a navigation frequency.

ACS element text (the applicant demonstrates understanding of)

Selecting a navigation frequency.

Bottom line

A pilot without adequate training may not anticipate that a change or disruption of the navigation source may reduce the level of automation, and horizontal flight path control may default to wings level mode. If only one identifier is heard about every 30 seconds, the DME is functional, but the associated VOR or LOC is not. You should listen to the station identifier before relying on the instrument for navigation.

FAA references

  1. IFH ch. 9 (p. 9-11) — FAA-H-8083-15B
  2. RMH ch. 7 (pp. 7-2–7-3) — FAA-H-8083-2A
  3. IFH ch. 9 (p. 9-30) — FAA-H-8083-15B
  4. IFH ch. 9 (p. 9-17) — FAA-H-8083-15B
  5. IPH ch. 4 (p. 4-35) — FAA-H-8083-16B
  6. IFH ch. 2 (p. 2-2) — FAA-H-8083-15B
  7. IFH ch. 9 (p. 9-31) — FAA-H-8083-15B
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