CA.I.C.K3hFAA-S-ACS-7B · Nov 2023Knowledge
h. Thunderstorms and microbursts
Meteorology applicable to the departure, en route, alternate, and destination under visual flight rules (VFR) in Visual Meteorological Conditions (VMC), including expected climate and hazardous conditions such as: h. Thunderstorms and microbursts
Bottom line
Thunderstorms and microbursts are conditions that can lead to turbulence, which can cause an airplane upset and loss of control in-flight. Thunderstorms are adverse conditions that are reported or forecast and might influence the pilot to alter the proposed flight.
Key numbers
| Number | What it means |
|---|---|
| 15 to 20 minutes old by the time the data sets are assembled and displayed in a cockpit | NEXRAD age |
| reviewed when the departure time is 6 hours or more away | Outlook briefing |
| significant changes expected within 1 hour before and after the ETA | Destination forecast |
FAA references
- AFH ch. 5, Environmental Factors; Human Factors (p. 5-2) — FAA-H-8083-3C
- AC 91-92, paras. 7.4, 7.4.1.1, 7.6, 7.7 — AC No: 91-92
- PHAK ch. 13 (p. 13-5) — FAA-H-8083-25C (2023)
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