Aviation weather briefing and FAA reference assistant for pilots. Fetches real-time METAR, TAF, and PIREPs from aviationweather.gov (no API key required). Provides FAR Part 61/91 quick reference, VFR/IFR weather minimums, and go/no-go decision support. Use when user asks about METAR, TAF, PIREP, aviation weather, can I fly today, VFR/IFR conditions, flight weather briefing, FAR regulations for pilots, PPL/IFR training weather, or queries with ICAO airport codes.

为飞行员提供航空天气简报和FAA参考助手。自动获取来自aviationweather.gov的实时METAR、TAF和PIREPs数据（无需API密钥）。提供FAR第61部和第91部快速查询、VFR/IFR天气最低标准及起降决策支持。适用于用户查询METAR、TAF、PIREP、航空天气、今日能否飞行、VFR/IFR条件、飞行天气简报、飞行员适用的FAR法规、私照或仪表等级训练中的天气要求，或包含ICAO机场代码的查询。