Expert reference and instructional resource for Instrument Flight Rules (IFR) operations, procedures, training, and systems. Use this skill whenever the user asks about IFR flying, instrument flying, instrument rating training, IFR procedures, approach plates, departure procedures, en route navigation, hold entries, airspace, ATC communication scripts, weather minimums, filing flight plans, partial panel flying, unusual attitudes, instrument currency, CFII instruction, or any topic related to flying in IMC (Instrument Meteorological Conditions). Also trigger for: "how do I fly an ILS", "explain a hold", "what is a missed approach", "VOR/DME approach", "RNAV/GPS approach", "IFR en route", "approach briefing", "instrument scan", "pitot-static system", "gyroscopic instruments", "IFR weather minimums", "alternate airport requirements", "IFR currency", "6 month IFR proficiency", "partial panel", "unusual attitude recovery", or any request to generate IFR training materials, lesson plans, or scenario briefs.