CA.I.C.K3dFAA-S-ACS-7B · Nov 2023Knowledge
d. Moisture/precipitation
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: d. Moisture/precipitation
Bottom line
Precipitation is one of the weather factors that can factor into VFR flight into instrument meteorological conditions. At night, visibility restrictions hamper visual operations and restrict a pilot's ability to see and avoid precipitation and other hazards. NEXRAD mosaic data sets can be 15 to 20 minutes old by the time they are assembled and displayed in a cockpit.
Key numbers
| Number | What it means |
|---|---|
| 15 to 20 minutes old by the time the mosaic data sets are assembled and displayed in a cockpit | NEXRAD age |
FAA references
- AC 91-92, paras. 7.4, 7.4.1.1, 7.6, 7.7 — AC No: 91-92
- RMH ch. 3 (p. 3-8) — FAA-H-8083-2A
- AWH ch. 3 (p. 3-3) — FAA-H-8083-28A
- AFH ch. 5, Environmental Factors (p. 5-2) — FAA-H-8083-3C
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