AA.II.C.S3FAA-S-ACS-11A · Nov 2023Skills

Comply with air traffic control (ATC) clearances and instructions and observe all runwa...

ACS element text (the applicant demonstrates understanding of)

Comply with air traffic control (ATC) clearances and instructions and observe all runway hold lines, Instrument Landing System (ILS) critical areas, beacons, and other airport/taxiway markings and lighting.

Bottom line

No person may, at any airport with an operating control tower, operate an aircraft on a runway or taxiway, or take off or land an aircraft, unless an appropriate clearance is received from ATC. Without explicate ATC clearance, do not cross any runway hold short lines or instrument landing system (ILS) critical areas, if in use.

FAA references

  1. 14 CFR 91.129 (Operations in Class D airspace.) — eCFR current as of 2026-03-05
  2. 14 CFR 91.123 (Compliance with ATC clearances and instructions.) — eCFR current as of 2026-03-05
  3. AC 120-74, paras. 7b, 7e, 7f — AC No: 120-74B
  4. AC 91-73, para. 7d — AC No: 91-73B
  5. PHAK ch. 14 (p. 14-34) — FAA-H-8083-25C (2023)
  6. AC 91-73, para. 7g — AC No: 91-73B
  7. PHAK ch. 14 (p. 14-2) — FAA-H-8083-25C (2023)
  8. AIM 2-3-4 (Taxiway Markings) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
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