Identify which weather you are looking at
FLAL can show available online airport weather and, with a compatible setup, received FIS-B products. A downloaded preparation snapshot, an online response and a receiver product are different sources. Do not assume they have the same coverage or update time.
Read three things before interpreting the display
- Source: where did this report or product come from?
- Time: when was it observed, issued or valid—not merely downloaded?
- Availability: is it current, cached, missing or incomplete?
A successful download confirms a saved file; it does not make an old observation new. Missing weather is not evidence of favorable conditions. If the display is unclear, consult the current original product.
Keep reports and forecasts distinct
METAR describes an observation; TAF is a forecast for a stated period. Use both with the broader briefing context. A destination report alone does not explain the whole route or conditions between reporting stations.
Read the practical METAR/TAF guide for a repeatable sequence that starts with the station and time.
Use receiver weather with its limits
FIS-B products are delayed and reception depends on equipment and broadcast coverage. Review age and coverage for each product. Do not use a weather picture to pick a close path through hazardous weather.
Make a departure recheck part of the routine
Recheck official weather and applicable restrictions before departure, even if you prepared the route earlier. FLAL is supplemental and does not provide a complete NOTAM briefing. Keep alternatives available as the weather or the information picture changes.
FLAL provides supplemental planning and situational awareness. Verify current official information and your equipment setup. Offline data is a saved snapshot, not a live update.