I have no idea what's different

simulator/models/aircraft.py

@@ -1,5 +1,8 @@
 from django.db import models
 
+# from .flight import Flight
+from django.utils import timezone
+
 
 class AircraftBase(models.Model):
     name = models.CharField(max_length=20)
@@ -22,12 +25,12 @@ class Equipment(models.Model):
         "Aerodrome",
         on_delete=models.PROTECT,
         related_name="based_equipment",
-        help_text="Home base for this equipment",
+        help_text="Starting location for this equipment",
         null=True,
         blank=True,
     )
     cycles = models.PositiveIntegerField(
-        default=0, help_text="Total number of flight cycles (takeoff/landing pairs)"
+        default=0, help_text="Total number of flight cycles"
     )
     air_time_hours = models.DecimalField(
         max_digits=10,
@@ -42,8 +45,6 @@ class Equipment(models.Model):
     @property
     def current_location(self):
         """Get the current location of this equipment based on flight history."""
-        from .flight import Flight
-        from django.utils import timezone
 
         now = timezone.now()
 
@@ -59,5 +60,4 @@ class Equipment(models.Model):
             elif last_flight.arrival_time <= now:
                 return last_flight.destination
 
-        # No flights yet or no flights have departed, equipment is at base
         return self.base_location