At Angel Aviation, we train instrument pilots to do more than follow procedures—we train them to understand the system. IFR flying is all about structure: from your clearance on the ground to your final approach fix, everything follows a logical flow. That flow is broken into three key phases: Departure, En Route, and Arrival.

Your DPE wants to see that you know how to transition smoothly between each phase while staying compliant, ahead of the airplane, and situationally aware. This guide walks you through everything you need to know for ACS Area III: Navigation and Area IV: ATC Clearances & Procedures.

🛫 IFR Departures: Getting Started Right

A solid departure sets the tone for the rest of the flight. Whether you’re using an ODP, SID, or vectors, here’s what to focus on:

Types of IFR Departures:

  • Obstacle Departure Procedures (ODPs): Text-based and used when terrain is a factor. Often the default if no SID is assigned.
  • Standard Instrument Departures (SIDs): Published graphic procedures used for traffic flow and obstacle avoidance.
  • ATC Radar Vectors: Given by ATC, often in lieu of a SID at smaller airports.

What to Know:

  • Read and brief the departure in full.
  • Understand climb gradients and minimum altitudes.
  • Set the right nav sources, headings, and initial frequencies before taxi.
  • Know when to switch to en route structure (e.g., after the last fix on a SID).

💡 Checkride Tip: If you don’t get a SID, say so in your briefing. The examiner wants to hear your decision-making.

✈️ En Route Operations: The Cruise Phase with Consequences

Once airborne and established on course, en route IFR is about maintaining awareness—not just riding along.

Key Tasks:

  • Maintain assigned altitudes and airways
  • Monitor position using GPS, VORs, or DME
  • Comply with MEAs, MOAs, and controlled airspace rules
  • Know how to reroute, hold, or amend your clearance on the fly

Situational Awareness Tools:

  • Double-check VOR radials and distances
  • Cross-check your course using multiple sources
  • Keep an eye out for EFC times, route changes, or reroutes
  • Monitor weather and alternate airport options

💡 Checkride Tip: If you don’t know where you are without looking at your GPS, you’re not ready.

🛬 IFR Arrivals: Getting Set Up for Approach

Arrival procedures help you transition from cruise altitude to the approach environment in a standardized way.

Types of Arrivals:

  • Standard Terminal Arrival Routes (STARs): Simplify descent and transition into busy terminal areas. Usually have crossing altitudes and speeds.
  • Vectors to Final: ATC guides you directly to intercept the final approach course.
  • Published Transitions: Often part of the approach plate or STAR, leading you from en route fix to IAF.

What to Know:

  • Brief STARs just like approaches—altitudes, speeds, and transitions matter.
  • Always verify what’s assigned in your clearance.
  • Prepare for “descend via” vs “expect further clearance”—they’re not the same.
  • Monitor your altitude and plan descent profiles early.

💡 Checkride Tip: Don’t descend on a STAR unless cleared to “descend via.” And always read back clearances verbatim.

🧠 Summary: Think Like an IFR Pilot

Flying IFR isn’t just about doing what the panel says—it’s about knowing where you are, where you’re going, and what’s coming next.

Each phase of IFR flight has its own procedures, expectations, and mindset:

  • Departure: Obstacle avoidance and clearance compliance
  • En Route: Monitoring systems, maintaining altitudes, and staying flexible
  • Arrival: Transitioning to the approach and prepping for final descent

By understanding the logic behind each phase, you’ll not only pass your checkride—you’ll be the kind of instrument pilot other pilots want to fly with.

Need more help with IFR flight structure?
 Schedule a sim session or fly with one of our instrument instructors and we’ll walk you through the full system start to finish.