IR.I.B.K1FAA-S-ACS-8C · Nov 2023Knowledge
Sources of weather data (e.g., National Weather Service, Flight Service) for flight pla...
Sources of weather data (e.g., National Weather Service, Flight Service) for flight planning purposes.
Bottom line
Before every flight, the PIC must become familiar with all available information concerning that flight. Flight Service offers three basic briefing packages: Standard, Abbreviated, and Outlook, and third-party providers may offer them as well. The FAA considers that a self-briefing may be compliant with current Federal aviation regulations.
Key numbers
| Number | What it means |
|---|---|
| 6 hours or more from briefing time | Outlook trigger |
FAA references
- 14 CFR 91.103 (Preflight action.) — eCFR current as of 2026-03-05
- AC 91-92, paras. 4.12, 4.16, 4.17, 4.19, 7.1, 7.2.1, 7.2.2, 7.2.3, 7.3.1 — AC No: 91-92
- PHAK ch. 13 (p. 13-4) — FAA-H-8083-25C (2023)
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