Instrument Flight Rules (IFR)

Instrument Flight Rules (IFR) are a set of aviation regulations under which a pilot operates an aircraft primarily using instruments for navigation and control, rather than visual references. IFR is required when flying in Instrument Meteorological Conditions (IMC) or in certain controlled airspace regardless of weather conditions. Pilots must be instrument-rated, and aircraft must be equipped and certified for IFR operations.

• Allow flight in poor visibility or cloudy conditions (IMC)
• Enable safe navigation in high-traffic or controlled airspace
• Provide positive ATC separation from other traffic and terrain
• Standardize procedures for departures, enroute operations, and approaches

• In IMC (weather below VFR minima)
• In Class A airspace (always IFR)
• For airline and commercial transport flights
• For instrument approaches and flights at night (in some jurisdictions)
• When filing an IFR flight plan (mandatory for IFR)

• Clearance and start-up
• SID (Standard Instrument Departure)
• Enroute navigation using airways or RNAV
• STAR (Standard Arrival Route) or vectoring
• Instrument approach (e.g., ILS, RNAV, VOR)
• Missed approach if required
• Landing and taxi under ATC guidance

• “Cleared to Munich via ROTAX 2N departure, climb FL90.”
• “Descend to 3000 feet, expect ILS runway 08.”
• “Maintain FL280, contact Vienna Radar on 132.1.”

• Must include: departure, route, alternate airport, and fuel calculation
• Requires filing at least 60 minutes before departure (domestically may vary)
• ATC may issue amended routes or expected clearances
• IFR flight plans are filed in ICAO format (FPL)

• ✅ Keep charts, frequencies, and checklists ready and organized
• ✅ Anticipate clearances and altitude changes
• ✅ Practice hold entries, missed approaches, and diversions
• ✅ Use LearnATC’s IFR modules to build fluency with clearances, STARs, and real-world navigation scenarios