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PA.VIII.F.K1FAA-S-ACS-6C · Nov 2023Knowledge

Operating communications equipment, including identifying and selecting radio frequenci...

ACS element text (the applicant demonstrates understanding of)

Operating communications equipment, including identifying and selecting radio frequencies, requesting and following air traffic control (ATC) instructions.

Bottom line

ATC uses standard phraseology and require readbacks and other responses from the pilot in order to verify that clearances and instructions are understood. Pilots operating from a towered airport are required to maintain two-way radio communication with ATC and to acknowledge and comply with their instructions.

Key numbers

Key numbers for Operating communications equipment, including identifying and selecting radio frequenci...
NumberWhat it means
118.000–136.975 MHzVHF band
25 kHzRadio spacing
121.5 MHzGuard
30-mile circleMode C veil

FAA references

  1. IFH ch. 10 (p. 10-3) — FAA-H-8083-15B
  2. PHAK ch. 14 (p. 14-2) — FAA-H-8083-25C (2023)
  3. IFH ch. 2 (p. 2-2) — FAA-H-8083-15B
  4. AFH ch. 18 (p. 18-22) — FAA-H-8083-3C
  5. IFH ch. 2 (pp. 2-3–2-4) — FAA-H-8083-15B
  6. RMH ch. 3 (p. 3-4) — FAA-H-8083-2A
  7. RMH ch. 6 (pp. 6-3–6-4) — FAA-H-8083-2A
  8. PHAK ch. 16 (p. 16-34) — FAA-H-8083-25C (2023)
  9. RMH ch. 3 (p. 3-6) — FAA-H-8083-2A
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