diff --git a/gen/aircraft.py b/gen/aircraft.py
index 02451ab5..de0eb37c 100644
--- a/gen/aircraft.py
+++ b/gen/aircraft.py
@@ -344,13 +344,7 @@ class AircraftConflictGenerator:
         cp = flight.from_cp
         fallback_runway = RunwayData(cp.full_name, runway_name="")
         if cp.cptype == ControlPointType.AIRBASE:
-            # TODO: Implement logic for picking preferred runway.
-            runway = flight.from_cp.airport.runways[0]
-            runway_number = runway.heading // 10
-            runway_side = ["", "L", "R"][runway.leftright]
-            runway_name = f"{runway_number:02}{runway_side}"
-            departure_runway = RunwayData.for_airfield(
-                flight.from_cp.airport, runway_name)
+            departure_runway = self.get_preferred_runway(flight.from_cp.airport)
         elif cp.is_fleet:
             departure_runway = dynamic_runways.get(cp.name, fallback_runway)
         else:
@@ -380,6 +374,21 @@ class AircraftConflictGenerator:
                 for unit in group.units:
                     unit.fuel = Su_33.fuel_max * 0.8
 
+    def get_preferred_runway(self, airport: Airport) -> RunwayData:
+        """Returns the preferred runway for the given airport.
+
+        Right now we're only selecting runways based on whether or not they have
+        ILS, but we could also choose based on wind conditions, or which
+        direction flight plans should follow.
+        """
+        runways = list(RunwayData.for_pydcs_airport(airport))
+        for runway in runways:
+            # Prefer any runway with ILS.
+            if runway.ils is not None:
+                return runway
+        # Otherwise we lack the mission information to pick more usefully,
+        # so just use the first runway.
+        return runways[0]
 
     def _generate_at_airport(self, name: str, side: Country, unit_type: FlyingType, count: int, client_count: int, airport: Airport = None, start_type = None) -> FlyingGroup:
         assert count > 0
diff --git a/gen/airfields.py b/gen/airfields.py
index e4c5f1fb..c75c5ff4 100644
--- a/gen/airfields.py
+++ b/gen/airfields.py
@@ -5,7 +5,7 @@ data added to pydcs. Until then, missing data can be manually filled in here.
 """
 from dataclasses import dataclass, field
 import logging
-from typing import Dict, Optional, Tuple
+from typing import Dict, Iterator, Optional, Tuple
 
 from pydcs.dcs.terrain.terrain import Airport
 from .radios import MHz, RadioFrequency
@@ -677,3 +677,18 @@ class RunwayData:
             tacan,
             ils
         )
+
+    @classmethod
+    def for_pydcs_airport(cls, airport: Airport) -> Iterator["RunwayData"]:
+        for runway in airport.runways:
+            runway_number = runway.heading // 10
+            runway_side = ["", "L", "R"][runway.leftright]
+            runway_name = f"{runway_number:02}{runway_side}"
+            yield cls.for_airfield(airport, runway_name)
+
+            # pydcs only exposes one runway per physical runway, so to expose
+            # both sides of the runway we need to generate the other.
+            runway_number = ((runway.heading + 180) % 360) // 10
+            runway_side = ["", "R", "L"][runway.leftright]
+            runway_name = f"{runway_number:02}{runway_side}"
+            yield cls.for_airfield(airport, runway_name)