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AA.II.A.K6FAA-S-ACS-11A · Nov 2023Knowledge

Requirements for current and appropriate navigation data.

ACS element text (the applicant demonstrates understanding of)

Requirements for current and appropriate navigation data.

Bottom line

The navigation database in an FMS must be current if the system is used for IFR navigation and approaches. Some FMS units allow en route IFR operations if the navigation waypoints are manually verified by the pilot and accepted.

FAA references

  1. AVIONICS ch. 3 (p. 3-6) — FAA-H-8083-6
  2. 14 CFR 61.65 (Instrument rating requirements.) — eCFR current as of 2026-03-05
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