AI.III.CFAA-S-ACS-25 · Nov 2023
Weather Information
To determine the applicant understands weather information, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction. Note: If K2 is selected, the evaluator must assess the applicant’s knowledge of at least three sub-elements. Note: If K3 is selected, the evaluator must assess the applicant’s knowledge of at least three sub-elements.
Bottom line
Each pilot in command shall, before beginning a flight, become familiar with all available information concerning that flight.
FAA references
- 14 CFR 91.103 (Preflight action.) — eCFR current as of 2026-03-05
- AC 91-92, paras. 4.16, 7.2.1, 7.2.2 — AC No: 91-92
- AWH ch. 3 (pp. 3-3–3-5) — FAA-H-8083-28A
Knowledge
- AI.III.C.K1: Sources of weather data (e.g., National Weather Service, Flight Service) for flight planning purposes.
- AI.III.C.K2: Acceptable weather products and resources required for preflight planning, current and forecast weather for departure, en route, and arrival
- AI.III.C.K2a: a. Airport Observations (METAR and SPECI) and Pilot Observations (PIREP)
- AI.III.C.K2b: b. Surface Analysis Chart, Ceiling and Visibility Chart (CVA)
- AI.III.C.K2c: c. Terminal Aerodrome Forecasts (TAF)
- AI.III.C.K2d: d. Graphical Forecasts for Aviation (GFA)
- AI.III.C.K2e: e. Wind and Temperature Aloft Forecast (FB)
- AI.III.C.K2f: f. Convective Outlook (AC)
- AI.III.C.K2g: g. Inflight Aviation Weather Advisories including Airmen's Meteorological Information (AIRMET), Significant Meteorological Information (SIGM
- AI.III.C.K3: Meteorology applicable to the departure, en route, alternate, and destination under visual flight rules (VFR) in Visual Meteorological Condi
- AI.III.C.K3a: a. Atmospheric composition and stability
- AI.III.C.K3b: b. Wind (e.g., windshear, mountain wave, factors affecting wind, etc.)
- AI.III.C.K3c: c. Temperature and heat exchange
- AI.III.C.K3d: d. Moisture/precipitation
- AI.III.C.K3e: e. Weather system formation, including air masses and fronts
- AI.III.C.K3f: f. Clouds
- AI.III.C.K3g: g. Turbulence
- AI.III.C.K3h: h. Thunderstorms and microbursts
- AI.III.C.K3i: i. Icing and freezing level information
- AI.III.C.K3j: j. Fog/mist
- AI.III.C.K3k: k. Frost
- AI.III.C.K3l: l. Obstructions to visibility (e.g., smoke, haze, volcanic ash, etc.)
- AI.III.C.K4: Flight deck instrument displays of digital weather and aeronautical information.
Risk management
- AI.III.C.R1: Making the go/no-go and continue/divert decisions, including:
- AI.III.C.R1a: a. Circumstances that would make diversion prudent
- AI.III.C.R1b: b. Personal weather minimums
- AI.III.C.R1c: c. Hazardous weather conditions, including known or forecast icing or turbulence aloft
- AI.III.C.R2: Use and limitations of:
- AI.III.C.R2a: a. Installed onboard weather equipment
- AI.III.C.R2b: b. Aviation weather reports and forecasts
- AI.III.C.R2c: c. Inflight weather resources
Skills
- AI.III.C.S1: Use available aviation weather resources to obtain an adequate weather briefing.
- AI.III.C.S2: Analyze the implications of at least three of the conditions listed in K3a through K3l, using actual weather or weather conditions provided
- AI.III.C.S3: Correlate weather information to make a go/no-go decision. Note: The evaluator asks the applicant to present a preflight lesson on the selec
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