DayZ Updated April 27, 2026

Configuring Helicopter Crashes and Dynamic Events

Control helicrash frequency, infected hordes, and vehicle spawns by editing events.xml and cfgeventspawns.xml in your mission PBO.

DayZeventshelicrashdynamic eventsmission

Overview

Dynamic events are scheduled world events that include helicopter crashes, infected waves, and vehicle spawns. They are configured through two files inside your mission PBO: cfgeventspawns.xml (spawn locations and coordinates) and db/events.xml (event types, timing, and quantities). Tuning these files lets you increase helicrash frequency, add new spawn locations, or disable specific event types.

File Locations

Both files are inside the mission PBO. Extract with pboProject before editing:

  • missionFiles/dayzOffline.chernarusplus/cfgeventspawns.xml — spawn point coordinates per event type
  • missionFiles/dayzOffline.chernarusplus/db/events.xml — event definitions, timing, and nominal counts

events.xml Structure

<event name="HeliCrash">
    <nominal>5</nominal>
    <min>3</min>
    <max>7</max>
    <lifetime>3600</lifetime>
    <restock>0</restock>
    <safeDistance>1000</safeDistance>
    <flags deletable="0" init_random="0" remove_damaged="1"/>
    <children>
        <child lootmax="0" lootmin="0" max="1" min="1" type="HeliCrashDefault"/>
    </children>
</event>

Key Fields

Field Description
nominal Target number of active events on the map simultaneously
min Minimum count before new events are triggered
max Hard cap on simultaneous events
lifetime Seconds before the event despawns
restock Restock delay in seconds (0 = immediate respawn when below min)
safeDistance Minimum meters from a player before the event can spawn

Default Event Types

  • HeliCrash / HeliCrashDefault — downed helicopter with military loot
  • CentralEvent — infected spawn waves near populated areas
  • VehicleSpawn — abandoned vehicles across the map

Increasing Helicrash Frequency

The default helicrash interval is effectively 3600–5400 seconds (1–1.5 hours) between crashes appearing. To double the crash rate:

<event name="HeliCrash">
    <nominal>10</nominal>
    <min>6</min>
    <max>12</max>
    <lifetime>3600</lifetime>
    <restock>0</restock>
    <safeDistance>800</safeDistance>

Setting nominal higher means more active crashes exist at once. Setting safeDistance lower allows crashes to spawn nearer to players.

Adding Custom Spawn Locations

Spawn coordinates are defined in cfgeventspawns.xml:

<eventposdef name="HeliCrash">
    <pos x="4521.0" y="0.0" z="6830.0" a="0"/>
    <pos x="7812.5" y="0.0" z="9103.2" a="0"/>
</eventposdef>

x and z are map coordinates (use DayZ map tools like iZurvive to find coordinates). a is the rotation angle. Add as many <pos> entries as you want — the server selects from them randomly.

Disabling an Event Type

Set nominal, min, and max all to 0:

<event name="CentralEvent">
    <nominal>0</nominal>
    <min>0</min>
    <max>0</max>

Vehicle Spawn Events

Vehicle events follow the same structure. To increase abandoned vehicles:

<event name="VehicleSpawn">
    <nominal>20</nominal>
    <min>10</min>
    <max>25</max>
    <lifetime>86400</lifetime>

A lifetime of 86400 (24 hours) means vehicles persist for a full day before despawning if untouched.

Applying Changes

  1. Stop the server
  2. Extract mission PBO with pboProject
  3. Edit db/events.xml and/or cfgeventspawns.xml
  4. Repack the PBO
  5. Replace in missionFiles/
  6. Start the server

Event changes require a full server restart. There is no hot-reload for event configuration.

Troubleshooting

  • No helicrashes spawning: Verify cfgeventspawns.xml has valid coordinates for HeliCrash. If the spawn pool is empty, the event engine skips the event silently.
  • Crashes spawning too close to spawn zones: Increase safeDistance to 1500 or higher.
  • Event loot is empty: Check types.xml for HeliCrashDefault loot class entries — the event spawns correctly but loot quantities may be zeroed out.
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