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IR.I.C.K1aFAA-S-ACS-8C · Nov 2023Knowledge

a. Available navigational facilities

ACS element text (the applicant demonstrates understanding of)

Route planning, including consideration of: a. Available navigational facilities

Bottom line

Before beginning a flight, the PIC must become familiar with all available information concerning that flight.

Key numbers

Key numbers for a. Available navigational facilities
NumberWhat it means
0 NM at sea level to 65 NM at 45,000 feet MSLMEA gap max
1 hour before to 1 hour after the ETA, unless a specific timeframe is requested by the pilotRAIM window

FAA references

  1. PHAK ch. 16 (p. 16-17) — FAA-H-8083-25C (2023)
  2. IPH ch. 2 (p. 2-29) — FAA-H-8083-16B
  3. IFH ch. 9 (pp. 9-28–9-29) — FAA-H-8083-15B
  4. IPH Glossary (p. G-2) — FAA-H-8083-16B
  5. 14 CFR 91.511 (Communication and navigation equipment for overwater operations.) — eCFR current as of 2026-03-05
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