AI.II.G.S2FAA-S-ACS-25 · Nov 2023Skills
Correctly identify airspace and operate in accordance with associated communication and...
Correctly identify airspace and operate in accordance with associated communication and equipment requirements.
Bottom line
Each pilot must maintain two-way radio communications with ATC while operating in Class A airspace. Unless otherwise authorized, each aircraft must establish two-way radio communications with the ATC facility providing air traffic services prior to entering the airspace and thereafter maintain those communications while in the airspace.
FAA references
- 14 CFR 91.135 (Operations in Class A airspace.) — eCFR current as of 2026-03-05
- PHAK ch. 15 (p. 15-2) — FAA-H-8083-25C (2023)
- AIM 3-2-3 (Class B Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- AIM 3-2-4 (Class C Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- 14 CFR 91.130 (Operations in Class C airspace.) — eCFR current as of 2026-03-05
- 14 CFR 91.117 (Aircraft speed.) — eCFR current as of 2026-03-05
- AIM 3-2-5 (Class D Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- AIM 3-2-2 (Class A Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- AIM 3-2-6 (Class E Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- 14 CFR 91.129 (Operations in Class D airspace.) — eCFR current as of 2026-03-05
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